function check_unique_entry(field_id, update_id, t, f, f2, f3, value, v2, v3, isdelfield, chkisdeleted)
{
//alert(isdelfield+":::::::::::::"+chkisdeleted);

strURL="checkemailuser.php?t="+t+"&f="+f+"&f2="+f2+"&f3="+f3+"&v="+value+"&v2="+v2+"&v3="+v3+"&isdel="+isdelfield+"&ischk="+chkisdeleted;
//alert(strURL);
var xmlHttpReq = false;
var self = this;

// Mozilla/Safari
if (window.XMLHttpRequest)
{
self.xmlHttpReq = new XMLHttpRequest();
}
// IE
else if (window.ActiveXObject)
{
self.xmlHttpReq = new ActiveXObject("Microsoft.XMLHTTP");
}
self.xmlHttpReq.open('POST', strURL, true);
self.xmlHttpReq.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
self.xmlHttpReq.onreadystatechange = function()
{
if (self.xmlHttpReq.readyState == 4)
{
 //alert(self.xmlHttpReq.responseText);
if(self.xmlHttpReq.responseText==0)
{
document.getElementById(update_id).innerHTML="<font color='#ff0000'><b>Already Exist</b></font>";
document.getElementById(field_id).focus();
document.getElementById(field_id).value='';

}
else
{
document.getElementById(update_id).innerHTML="<font color='#006600'><b>Available</b></font>";
}
}
}

self.xmlHttpReq.send('');
}