// JavaScript Document
function Validatequickcontact(thisform)
{ 

	//alert("hi");
	with (thisform)
	{
	
		 	if (emptyvalidation(name,"Please fill in your Name.")==false) 
			{
				name.select();
				name.focus();
				return false;
			}
				
			
			if (emptyvalidation(email,"Please fill in your Email Address.")==false) 
			{
				email.select();
				email.focus();
				return false;
			}
			 if(emailvalidation(email)==false)
			{
				alert("Sorry, you have entered an invalid Email Address.");
				email.select();
				email.focus();
				return false;			
			}
			if (emptyvalidation(phoneno,"Please fill  Phone Number.")==false) 
			{
				phoneno.select();
				phoneno.focus();
				return false;
			}
	/*		if (emptyvalidation(comments,"Please fill  Comments.")==false) 
			{
				comments.select();
				comments.focus();
				return false;
			}*/
			
		
		 
		
	if (userdigit.value==userdigit.defaultValue || userdigit.value=="Invalid Verification Code")
			{
			userdigit.value="";	
			}
			if(emptyvalidation(userdigit,"Please fill Verification Code.")==false)
			{
			userdigit.focus();
			return false;
			}
			document.getElementById("loadimagenew").innerHTML='<span style="float:right;height:27px;width:69px;margin-bottom:42px;margin-top:4px;"><img  src="images/ajax-loader.gif" alt="" /></span>';

			runAjax('check_captcha','process_mail.php',thisform.userdigit.value);
			
			return false;

			
				document.quickcontact.submit();
		
	} 
	document.getElementById("loadimagenew").innerHTML='<span style="float:right;height:27px;width:69px;margin-bottom:42px;margin-top:4px;"><img  src="images/ajax-loader.gif" alt=""  />';
	
	runAjax('check_captcha','process_mail.php',document.quickcontact.userdigit.value);
return false;	
//thisform.submit();			
	
}
// JavaScript Document

function emailvalidation(thisform) {

   var reg = /^([A-Za-z0-9_\-\.])+\@([A-Za-z0-9_\-\.])+\.([A-Za-z]{2,4})$/;
   var address = thisform.value;
   var email = address.split(',');
   
   for (var i = 0; i < email.length; i++) {
   if(reg.test(email[i]) == false) {
     // alert('Invalid Email Address');
      return false;
   }
   else
   {
    }
   }
}
//------------------------------------------------------

function captcha_refresh()
{ 
document.getElementById("button_div").src='button.php?'+Math.random();
return false;
}

<!--Ajax for checking the captcha code ends here -->

var xmlHttp
function runAjax(field,argurl,argVal)
{
//document.getElementById("check_captcha1").innerHTML=" Loading...";
xmlHttp=GetXmlHttpObject()
if (xmlHttp==null)
{
alert ("Browser does not support HTTP Request")
return
} 
var url=argurl
url=url+"?userdigit="+argVal
url=url+"&sid="+Math.random()
if(field=='check_captcha')
xmlHttp.onreadystatechange=check_captcha;
xmlHttp.open("GET",url,true)
xmlHttp.send(null)
}

function check_captcha() 
{ 
	if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
	{ 
	//alert(xmlHttp.responseText);
			if(xmlHttp.responseText=="yes")
			{
		
		//document.getElementById("loadimagenew").innerHTML='<img  src="../images/ajax-loader.gif" alt=""  />';
			
			
			document.quickcontact.submit();
		//	return true;
			
			}
			else
			{			

				 document.getElementById("loadimagenew").innerHTML='<a href="#" class="submit" title="Submit" onclick="return Validatequickcontact(document.quickcontact);return false;" ></a><br clear="all" />';
				captcha_refresh();
				
			 	document.quickcontact.userdigit.value="Invalid Verification Code";
		      //  document.quickcontact.userdigit.focus();
				//document.quickcontact.userdigit.select();
				return false;
			}
	} 
} 

function GetXmlHttpObject()
{ 
var objXMLHttp=null
if (window.XMLHttpRequest)
{
	objXMLHttp=new XMLHttpRequest()
}
else if (window.ActiveXObject)
{
	objXMLHttp=new ActiveXObject("Microsoft.XMLHTTP")
}
	return objXMLHttp
}