/*
  -------------------------------------------------------------------------
                Validation Script in JavaScript
                                Version 2.0
Copyright 2003 JavaScript-coder.com. All rights reserved.
You use this script in your Web pages, provided these opening credit
    lines are kept intact.
The Form validation script is distributed free from JavaScript-Coder.com

In return, you are requested to add a link to JavaScript-Coder.com, 
making it easy for others to find this script.
You can get the code for the link from: 
http://www.javascript-coder.com/gen/link-to-us.phtml 

If you want to get your site listed in the members' page, 
send an email to: support@javascript-coder.com 

    You may not reprint or redistribute this code without permission from 
    JavaScript-Coder.com.

JavaScript Coder
It precisely codes what you imagine!
Grab your copy here:
http://www.javascript-coder.com/
    -------------------------------------------------------------------------  
*/
var wrongColor = '#FFEEEE'
var rightColor = '#FFFFFF';

function Validator(frmname)
{
  this.formobj=document.forms[frmname];
if(!this.formobj)
{
  alert("BUG: couldnot get Form object "+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_addnl_vfunction;
this.clearAllValidations = clear_all_validations;
}
function set_addnl_vfunction(functionname)
{
  this.formobj.addnlvalidation = functionname;
}
function clear_all_validations()
{
for(var itr=0;itr < this.formobj.elements.length;itr++)
{
this.formobj.elements[itr].validationset = null;
}
}
function form_submit_handler()
{
	var errors = new Array();
	for(var itr=0;itr < this.elements.length;itr++){
		if(this.elements[itr].validationset && !this.elements[itr].validationset.validate()){
			if (this.elements[itr].error) {errors.push(this.elements[itr].error)}
			highLight(this.elements[itr], wrongColor);
		} else {
			highLight(this.elements[itr], rightColor);
		}
	}
	if (errors.length > 0) {
		alert(errors.join(', '));
		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("BUG: the form object is not set properly");
		return;
	}//if
	var itemobj = this.formobj[itemname];
	if(!itemobj){
		alert("BUG: 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=vdesc_validate;
}

function vdesc_validate()
{
	if(!V2validateData(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 validateEmailv2(email)
{
// a very simple email validation checking. 
// you can add more complex email checking if it helps 
    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 V2validateData(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) 
		{ 
			case "req": 
			case "required": 
         { 
				if(eval(objValue.value.length) == 0){
					if(!strError || strError.length ==0) {
						strError = objValue.name + " : Required Field"; 
					}//if 
					document.getElementById(objValue.id).error = strError; 
					return false; 
				}//if 
			break;             
         }//case required 
			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 
        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 "; 
                }//if 
                alert(strError + "\n [Error character position " + eval(charpos+1)+"]"); 
                return false; 
              }//if 
              break; 
           }//case alphanumeric 
        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 "; 
                }//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 "; 
                }//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 _"; 
                }//if                             
                alert(strError + "\n [Error character position " + eval(charpos+1)+"]"); 
                return false; 
              }//if 
break;
}
        case "email": 
          { 
               if(!validateEmailv2(objValue.value)) 
               { 
                 if(!strError || strError.length ==0) 
                 { 
                    strError = objValue.name+": Enter a valid Email address "; 
                 }//if      
		document.getElementById(objValue.id).error = strError;                                         
                 //alert(strError); 
                 return false; 
               }//if 
           break; 
          }//case email 
        case "lt": 
        case "lessthan": 
         { 
            if(isNaN(objValue.value)) 
            { 
              alert(objValue.name+": 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 "); 
              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.match(cmdvalue)) 
            { 
              if(!strError || strError.length ==0) 
              { 
                strError = objValue.name+": Invalid characters found "; 
              }//if                                                               
              alert(strError); 
              return false;                   
            }//if 
           break; 
         }//case regexp 
        case "dontselect": 
         { 
            if(objValue.selectedIndex == null) 
            { 
              alert("BUG: 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 "; 
              }//if                                                               
              alert(strError); 
              return false;                                   
             } 
             break; 
         }//case dontselect 
    }//switch 
    return true; 
}
/*
Copyright 2003 JavaScript-coder.com. All rights reserved.
*/