function getAjax()
{
	var xmlobj;
	
	try
	{
		xmlobj = new XMLHttpRequest();
	}
	catch(e)
	{
		try
		{
			xmlobj = new ActiveXObject("Msxml2.XMLHTTP");
		}
		catch(e)
		{
			try
			{
				xmlobj = new ActiveXObject("Microsoft.XMLHTTP");		
			}
			catch(e)
			{
				alert("Your browser is not compatible with Ajax");
				return false;
			}
		
		
		}
	}
	
	return xmlobj;
	
}