/*
  -------------------------------------------------------------------------
	                    JavaScript Validations
                © 2004 Shipping Exchange, Inc, all rights reserved
	Date: 17 June 2006.
	Developer: Surbhi Vyas
	Functionality Aspects: Widely used for the validation of various user
							entry forms. This comprises of various functions
							like Validate Date, Email and Text boxes.
    -------------------------------------------------------------------------  
*/


function Validator(frmname)
{
  this.formobj=document.forms[frmname];
	if(!this.formobj)
	{
	  alert("Form can not be found "+frmname);
		return;
	}
	if(this.formobj.onsubmit)
	{
	 this.formobj.old_onsubmit = this.formobj.onsubmit;
	 this.formobj.onsubmit=null;
	}
	else
	{
	 this.formobj.old_onsubmit = null;
	}
	this.formobj.onsubmit=form_submit_handler;
	this.addValidation = add_validation;
	this.setAddnlValidationFunction=set_add_function;
	this.clearAllValidations = clear_all_validations;
	
}


function set_add_function(functionname)
{
  this.formobj.addnlvalidation = functionname;
}

// to call clear validation from out side
function clearval(frmname)
{
	this.formobj=document.forms[frmname];
	clear_all_validations();
	
	
}
function clear_all_validations()
{
	for(var itr=0;itr < this.formobj.elements.length;itr++)
	{
		this.formobj.elements[itr].validationset = null;
	}
}


function form_submit_handler()
{
	for(var itr=0;itr < this.elements.length;itr++)
	{
		if(this.elements[itr].validationset &&
	   !this.elements[itr].validationset.validate())
		{
		  return false;
		}
	}
	if(this.addnlvalidation)
	{
	  str =" var ret = "+this.addnlvalidation+"()";
	  eval(str);
    if(!ret) return ret;
	}
	return true;
}


function add_validation(itemname,descriptor,errstr)
{
  if(!this.formobj)
	{
	  alert("Error: the form object is not set properly");
		return;
	}//if
	var itemobj = this.formobj[itemname];
  if(!itemobj)
	{
	  alert("Error: Couldnot get the input object named: "+itemname);
		return;
	}
	if(!itemobj.validationset)
	{
	  itemobj.validationset = new ValidationSet(itemobj);
	}
  itemobj.validationset.add(descriptor,errstr);
}


function ValidationDesc(inputitem,desc,error)
{
  this.desc=desc;
	this.error=error;
	this.itemobj = inputitem;
	this.validate=desc_validate;
}

//This function displays error message and set focus on that item
function desc_validate()
{
 if(!validateData(this.desc,this.itemobj,this.error))
 {
    this.itemobj.focus();
		return false;
 }
 return true;
}


function ValidationSet(inputitem)
{
    this.vSet=new Array();
	this.add= add_validationdesc;
	this.validate= vset_validate;
	this.itemobj = inputitem;
}


function add_validationdesc(desc,error)
{
  this.vSet[this.vSet.length]= 
	  new ValidationDesc(this.itemobj,desc,error);
}


function vset_validate()
{
   for(var itr=0;itr<this.vSet.length;itr++)
	 {
	   if(!this.vSet[itr].validate())
		 {
		   return false;
		 }
	 }
	 return true;
}


function validateEmail(email)
{
// a very simple email validation checking. 
// you can add more complex email checking if it helps 
    if(email.length <= 0)
	{
	  return true;
	}
    var splitted = email.match("^(.+)@(.+)$");
    if(splitted == null) return false;
    if(splitted[1] != null )
    {
      var regexp_user=/^\"?[\w-_\.]*\"?$/;
      if(splitted[1].match(regexp_user) == null) return false;
    }
    if(splitted[2] != null)
    {
      var regexp_domain=/^[\w-\.]*\.[A-Za-z]{2,4}$/;
      if(splitted[2].match(regexp_domain) == null) 
      {
	    var regexp_ip =/^\[\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}\]$/;
	    if(splitted[2].match(regexp_ip) == null) return false;
      }// if
      return true;
    }
return false;
}


function validateData(strValidateStr,objValue,strError) 
{ 	
	
    var epos = strValidateStr.search("="); 
    var  command  = ""; 
    var  cmdvalue = ""; 
    if(epos >= 0) 
    { 
     command  = strValidateStr.substring(0,epos); 
     cmdvalue = strValidateStr.substr(epos+1); 
    } 
    else 
    { 
     command = strValidateStr; 
    } 
    switch(command) 
    {	//if caseis req or required user will have to insert data
        case "req": 
        case "required": 
         { 
			//alert(eval(objValue.value));
			if(eval(objValue.value.length) == 0) 
           //if(eval(objValue.value.length) == 0) 
           { 
              if(!strError || strError.length ==0) 
              { 
                strError = objValue.name + " : Required Field"; 
              }//if 
              alert(strError); 
              return false; 
           }//if 
           break;             
         }//case required 
         
        //checks for the maxlegnth of input string
        case "maxlength": 
        case "maxlen": 
          { 
             if(eval(objValue.value.length) >  eval(cmdvalue)) 
             { 
               if(!strError || strError.length ==0) 
               { 
                 strError = objValue.name + " : "+cmdvalue+" characters maximum "; 
               }//if 
               alert(strError + "\n[Current length = " + objValue.value.length + " ]"); 
               return false; 
             }//if 
             break; 
          }//case maxlen 
        case "minlength": 
        case "minlen": 
           { 
             if(eval(objValue.value.length) <  eval(cmdvalue)) 
             { 
               if(!strError || strError.length ==0) 
               { 
                 strError = objValue.name + " : " + cmdvalue + " characters minimum  "; 
               }//if               
               alert(strError + "\n[Current length = " + objValue.value.length + " ]"); 
               return false;                 
             }//if 
             break; 
            }//case minlen 
         
        // this will only allow ALPAbetic and Numeric string.
        case "alnum": 
        case "alphanumeric": 
           { 
              var charpos = objValue.value.search("[^A-Za-z0-9]"); 
              if(objValue.value.length > 0 &&  charpos >= 0) 
              { 
               if(!strError || strError.length ==0) 
                { 
                  //strError = objValue.name+": Only alpha-numeric characters allowed "; 
                  strError = "Only alpha-numeric characters allowed "; 
                }//if 
                alert(strError + "\n [Error character position " + eval(charpos+1)+"]"); 
                return false; 
              }//if 
              break; 
           }//case alphanumeric 
           
        //for alpha, numeric, space 
        case "alphanumspec": 
           { 
              var charpos = objValue.value.search("[^ A-Za-z0-9]"); 
              if(objValue.value.length > 0 &&  charpos >= 0) 
              { 
               if(!strError || strError.length ==0) 
                { 
                  //strError = objValue.name+": Only alpha-numeric characters allowed "; 
                  strError = "Only alpha-numeric characters allowed "; 
                }//if 
                alert(strError + "\n [Error character position " + eval(charpos+1)+"]"); 
                return false; 
              }//if 
              break; 
           }//case alphanumspec
           
        //for alpha, space 
        case "alphaspec": 
           { 
              var charpos = objValue.value.search("[^ A-Za-z]"); 
              if(objValue.value.length > 0 &&  charpos >= 0) 
              { 
               if(!strError || strError.length ==0) 
                { 
                  //strError = objValue.name+": Only alpha-numeric characters allowed "; 
                  strError = "Only alphabetic characters allowed "; 
                }//if 
                alert(strError + "\n [Error character position " + eval(charpos+1)+"]"); 
                return false; 
              }//if 
              break; 
           }//case alphaspec
           
        //for alpha, space, single Quotes
        case "alphaspecquotes": 
           { 
              var charpos = objValue.value.search("[^ 'A-Za-z]"); 
              if(objValue.value.length > 0 &&  charpos >= 0) 
              { 
               if(!strError || strError.length ==0) 
                { 
                  //strError = objValue.name+": Only alpha-numeric characters allowed "; 
                  strError = "Only alphabetic characters allowed "; 
                }//if 
                alert(strError + "\n [Error character position " + eval(charpos+1)+"]"); 
                return false; 
              }//if 
              break; 
           }//case alphaspecquotes
           
        case "alphaquotes": 
           { 
              var charpos = objValue.value.search("[^'A-Za-z]"); 
              if(objValue.value.length > 0 &&  charpos >= 0) 
              { 
                  if(!strError || strError.length ==0) 
                { 
                  //strError = objValue.name+": Only alphabetic characters allowed "; 
                  strError = "Only alphabetic characters allowed "; 
                }//if                             
                alert(strError + "\n [Error character position " + eval(charpos+1)+"]"); 
                return false; 
              }//if 
              break; 
           }//alphaquotes
           
        //for alpha, numeric, space and comma
        case "alphanumspeccomm": 
           { 
              var charpos = objValue.value.search("[^, A-Za-z0-9]"); 
              if(objValue.value.length > 0 &&  charpos >= 0) 
              { 
               if(!strError || strError.length ==0) 
                { 
                  //strError = objValue.name+": Only alpha-numeric characters allowed "; 
                  strError = "Only alpha-numeric characters allowed "; 
                }//if 
                alert(strError + "\n [Error character position " + eval(charpos+1)+"]"); 
                return false; 
              }//if 
              break; 
           }//case alphanumspeccomm 
           
        //for alpha, numeric, space, comma and quota        
        case "alphanumspeccommquote": 
           { 
              var charpos = objValue.value.search("[^', A-Za-z0-9]"); 
              if(objValue.value.length > 0 &&  charpos >= 0) 
              { 
               if(!strError || strError.length ==0) 
                { 
                  //strError = objValue.name+": Only alpha-numeric characters allowed "; 
                  strError = "Only alpha-numeric characters allowed "; 
                }//if 
                alert(strError + "\n [Error character position " + eval(charpos+1)+"]"); 
                return false; 
              }//if 
              break; 
           }//case alphanumspeccommquote 
           
        //for alpha, numeric, space, quote, Ampersand        
        case "alphanumspecquoteamp": 
           { 
              var charpos = objValue.value.search("[^' &A-Za-z0-9]"); 
              if(objValue.value.length > 0 &&  charpos >= 0) 
              { 
               if(!strError || strError.length ==0) 
                { 
                  //strError = objValue.name+": Only alpha-numeric characters allowed "; 
                  strError = "Only alpha-numeric characters allowed "; 
                }//if 
                alert(strError + "\n [Error character position " + eval(charpos+1)+"]"); 
                return false; 
              }//if 
              break; 
           }//case alphanumspecquoteamp 
           
        case "num": 
        case "numeric": 
           { 
              var charpos = objValue.value.search("[^0-9]"); 
              if(objValue.value.length > 0 &&  charpos >= 0) 
              { 
                if(!strError || strError.length ==0) 
                { 
                  //strError = objValue.name+": Only digits allowed "; 
                  strError = "Only digits allowed "; 
                }//if               
                alert(strError + "\n [Error character position " + eval(charpos+1)+"]"); 
                return false; 
              }//if 
              break;               
           }//numeric 
        
        case "alphabetic": 
        case "alpha": 
           { 
              var charpos = objValue.value.search("[^A-Za-z]"); 
              if(objValue.value.length > 0 &&  charpos >= 0) 
              { 
                  if(!strError || strError.length ==0) 
                { 
                  //strError = objValue.name+": Only alphabetic characters allowed "; 
                  strError = "Only alphabetic characters allowed "; 
                }//if                             
                alert(strError + "\n [Error character position " + eval(charpos+1)+"]"); 
                return false; 
              }//if 
              break; 
           }//alpha 
		
		case "alnumhyphen":
			{
              var charpos = objValue.value.search("[^A-Za-z0-9\-_]"); 
              if(objValue.value.length > 0 &&  charpos >= 0) 
              { 
                  if(!strError || strError.length ==0) 
                { 
                  //strError = objValue.name+": characters allowed are A-Z,a-z,0-9,- and _"; 
                  strError = "characters allowed are A-Z,a-z,0-9,- and _"; 
                }//if                             
                alert(strError + "\n [Error character position " + eval(charpos+1)+"]"); 
                return false; 
              }//if 			
			break;
			}
			
		// only numeric and slash allowed
		case "numslash":
			{
              var charpos = objValue.value.search("[^0-9\/]"); 
              if(objValue.value.length > 0 &&  charpos >= 0) 
              { 
                  if(!strError || strError.length ==0) 
                { 
                  //strError = objValue.name+": characters allowed are A-Z,a-z,0-9,- and _"; 
                  strError = "characters allowed are A-Z,a-z,0-9,- and _"; 
                }//if                             
                //alert(strError + "\n [Error character position " + eval(charpos+1)+"]"); 
                alert(strError);
                return false; 
              }//if 			
			break;
			}//numslash
			
        case "email": 
          { 
               if(!validateEmail(objValue.value)) 
               { 
                 if(!strError || strError.length ==0) 
                 { 
                    //strError = objValue.name+": Enter a valid Email address "; 
                    strError = "Enter a valid Email address "; 
                 }//if                                               
                 alert(strError); 
                 return false; 
               }//if 
           break; 
          }//case email 
        
        case "lt": 
        case "lessthan": 
         { 
            if(isNaN(objValue.value)) 
            { 
              //alert(objValue.name+": Should be a number "); 
              alert("Should be a number "); 
              return false; 
            }//if 
            if(eval(objValue.value) >=  eval(cmdvalue)) 
            { 
              if(!strError || strError.length ==0) 
              { 
                strError = objValue.name + " : value should be less than "+ cmdvalue; 
              }//if               
              alert(strError); 
              return false;                 
             }//if             
            break; 
         }//case lessthan 
        
        case "gt": 
        case "greaterthan": 
         { 
            if(isNaN(objValue.value)) 
            { 
              //alert(objValue.name+": Should be a number "); 
              alert("Should be a number "); 
              return false; 
            }//if 
             if(eval(objValue.value) <=  eval(cmdvalue)) 
             { 
               if(!strError || strError.length ==0) 
               { 
                 strError = objValue.name + " : value should be greater than "+ cmdvalue; 
               }//if               
               alert(strError); 
               return false;                 
             }//if             
            break; 
         }//case greaterthan 
        
        case "regexp": 
         { 
		 	if(objValue.value.length > 0)
			{
	            if(!objValue.value.match(cmdvalue)) 
	            { 
	              if(!strError || strError.length ==0) 
	              { 
	                //strError = objValue.name+": Invalid characters found "; 
	                strError = " Invalid characters found "; 
	              }//if                                                               
	              alert(strError); 
	              return false;                   
	            }//if 
			}
           break; 
         }//case regexp 
        
        case "dontselect": 
         { 
            if(objValue.selectedIndex == null) 
            { 
              alert("Error: dontselect command for non-select Item"); 
              return false; 
            } 
            if(objValue.selectedIndex == eval(cmdvalue)) 
            { 
             if(!strError || strError.length ==0) 
              { 
              //strError = objValue.name+": Please Select one option "; 
              strError = " Please Select one option "; 
              }//if                                                               
              alert(strError); 
              return false;                                   
             } 
             break; 
         }//case dontselect 
    }//switch 
    return true; 
}


function validateLoginObject()
{
	if(!validateData("req", Form1.txt_user_name, "Please Enter 'User Name'."))
	{
		Form1.txt_user_name.focus();
		return false;
	}
	if(!validateData("req", Form1.txt_password, "Please Enter 'Password'."))
	{
		Form1.txt_password.focus();
		return false;
	}
}

/* © 2006 Shipping Exchange, Inc, all rights reserved. The use of any of the above javascript functions is restricted.*/

// function "trapkeydown(btn)"
// when clicking on enter on any textbox, given button's submit events should be called
function trapkeydown(btn)
{ 
	if (document.all)
	{ 
		if (event.keyCode == 13) 
		{ 
			event.returnValue=false; 
			event.cancel = true; 
			document.getElementById(btn).click(); 
			//btn_submit.click(); 
		} 
	} 
}