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;}
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)
{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;}
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";}
alert(strError);return false;}
break;}
case"maxlength":case"maxlen":{if(eval(objValue.value.length)>eval(cmdvalue))
{if(!strError||strError.length==0)
{strError=objValue.name+" : "+cmdvalue+" characters maximum ";}
alert(strError+"\n[Current length = "+objValue.value.length+" ]");return false;}
break;}
case"minlength":case"minlen":{if(eval(objValue.value.length)<eval(cmdvalue))
{if(!strError||strError.length==0)
{strError=objValue.name+" : "+cmdvalue+" characters minimum  ";}
alert(strError+"\n[Current length = "+objValue.value.length+" ]");return false;}
break;}
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 ";}
alert(strError+"\n [Error character position "+eval(charpos+1)+"]");return false;}
break;}
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 ";}
alert(strError+"\n [Error character position "+eval(charpos+1)+"]");return false;}
break;}
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 ";}
alert(strError+"\n [Error character position "+eval(charpos+1)+"]");return false;}
break;}
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 _";}
alert(strError+"\n [Error character position "+eval(charpos+1)+"]");return false;}
break;}
case"email":{if(!validateEmailv2(objValue.value))
{if(!strError||strError.length==0)
{strError=objValue.name+": Enter a valid Email address ";}
alert(strError);return false;}
break;}
case"lt":case"lessthan":{if(isNaN(objValue.value))
{alert(objValue.name+": Should be a number ");return false;}
if(eval(objValue.value)>=eval(cmdvalue))
{if(!strError||strError.length==0)
{strError=objValue.name+" : value should be less than "+cmdvalue;}
alert(strError);return false;}
break;}
case"gt":case"greaterthan":{if(isNaN(objValue.value))
{alert(objValue.name+": Should be a number ");return false;}
if(eval(objValue.value)<=eval(cmdvalue))
{if(!strError||strError.length==0)
{strError=objValue.name+" : value should be greater than "+cmdvalue;}
alert(strError);return false;}
break;}
case"regexp":{if(objValue.value.length>0)
{if(!objValue.value.match(cmdvalue))
{if(!strError||strError.length==0)
{strError=objValue.name+": Invalid characters found ";}
alert(strError);return false;}}
break;}
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 ";}
alert(strError);return false;}
break;}}
return true;}