var frm;
function checkDuplicate(frm,table,objField,objId,objMode,objparentId)
{	
	var PostParam = "";
	form = frm;

	with(frm)
	{	
		var Field_val = document.getElementById(objField).value;
		var Id_val = document.getElementById(objId).value;		
	}
	
	extra = '';	
	if(objparentId)
	{
		var PId_val = document.getElementById(objparentId).value;
		if(PId_val!='')
		extra += "&PId_val="+PId_val+"&PId="+objparentId;
		else
		extra += "&PId_val=0&PId="+objparentId;
	}
	if(document.getElementById('member_type'))
	extra += "&member_type="+member_type;
	
	PostParam = "table="+table+"&mode="+objMode.value+"&Field_val="+Field_val+"&Id_val="+Id_val+"&Field="+objField+"&Id="+objId+extra;
	PostParam = PostParam;
	var url = SITE_AJAX_URL+"checkDuplicateRecord.php?";
	var contentType = "application/x-www-form-urlencoded; charset=UTF-8";
	var params = PostParam;
  	url = url+PostParam;
	/*alert(url);
	return false;*/
	if (window.XMLHttpRequest) 
	{
        http = new XMLHttpRequest();
        http.onreadystatechange = handleHttpResponse_status;
		http.open("post", url, true);
        http.setRequestHeader("Content-Type", contentType);
        http.send(params);
        status = true;
		// ActiveX XMLHttpRequest object
    } 
	else if (window.ActiveXObject) 
	{
        http = new ActiveXObject("Microsoft.XMLHTTP");
        if (http) 
		{
            http.onreadystatechange = handleHttpResponse_status;
            http.open("post", url, true);
            http.setRequestHeader("Content-Type", contentType);
			http.send(params);
            status = true;
        }
    }
}
function handleHttpResponse_status() 
{ 
	if (http.readyState == 4) 
	{	
      	isWorking = false;
    	if (http.responseText.indexOf('invalid') == -1) 
		{

    		var xmlDocument = http.responseXML; 
    		var existId = xmlDocument.getElementsByTagName('exist').item(0).firstChild.data;
			var field = xmlDocument.getElementsByTagName('field').item(0).firstChild.data;
		/*	alert(field);
			return false;*/
			if(existId == '1')
			{
				if(field == 'vUsername'){
					alert("User Name Already Exist.");	
					return false;
				}else{
					alert("Record Already Exist.");	
					return false;
				}
			}
			else
			{
				form.submit();
			}
		}
	}	
}