/*  Copyright 2003 JavaScript-coder.com. All rights reserved.  */
	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()
	{
		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("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 
	    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 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 
	              alert(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                                               
	                 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.length > 0)
				{
		            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; 
	}