// JavaScript Document

function echeck(str) {

		var at="@"
		var dot="."
		var lat=str.indexOf(at)
		var lstr=str.length
		var ldot=str.indexOf(dot)
		if (str.indexOf(at)==-1){
		   alert("Invalid E-mail ID")
		   return false
		}

		if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
		   alert("Invalid E-mail ID")
		   return false
		}

		if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){
		    alert("Invalid E-mail ID")
		    return false
		}

		 if (str.indexOf(at,(lat+1))!=-1){
		    alert("Invalid E-mail ID")
		    return false
		 }

		 if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
		    alert("Invalid E-mail ID")
		    return false
		 }

		 if (str.indexOf(dot,(lat+2))==-1){
		    alert("Invalid E-mail ID")
		    return false
		 }
		
		 if (str.indexOf(" ")!=-1){
		    alert("Invalid E-mail ID")
		    return false
		 }

 		 return true					
	}
function check()
{
	if(document.form1.Name.value=="")
	{
		alert("Please Specify Your Name");
		document.form1.Name.focus();
		return false;
	}
		if(document.form1.Contact.value=="")
	{
		alert("Please Specify Your Contact No");
		document.form1.Contact.focus();
		return false;
	}		
	if(document.form1.email.value=="")
	{
		alert("Please Specify Your Email ID");
		document.form1.email.focus();
		return false;
	}	
	emailID=document.form1.email;
	if (echeck(emailID.value)==false)
	{
		emailID.value="";
		emailID.focus();
		return false;
	}
	if(document.form1.captch_code_text.value!=document.form1.captch_code_hidden.value)
	{
		alert("Invalid Security Code");
		document.form1.captch_code_text.focus();
		return false;
	}
	
return true;
}
		
var CAPTCHA=null;
function randomString()
{
	var chars = "EYEWEBSLUTIN";
	var string_length =6;
	var randomstring = '';
	for (var i=0; i<string_length; i++) {
		var rnum = Math.floor(Math.random() * chars.length);
		randomstring += chars.substring(rnum,rnum+1);
	}
	CAPTCHA = randomstring;
}
function getCaptcha(name)
{
	randomString();
	document.write('<input type="hidden" value="'+CAPTCHA+'" name="'+name+'_hidden" />');	
	document.write('<img src="captcha.php?value='+CAPTCHA+'" />');	
	document.write('<br/><input type="text" name="'+name+'_text" />');	
}

function numeric(evt)
{
	var e = event || evt; // for trans-browser compatibility
	var charCode = e.which || e.keyCode;

	if (charCode > 31 && (charCode < 48 || charCode > 57))
		return false;

	return true;
}