var xmlHttp

function GetXmlHttpObject()
{
	var xmlHttp=null;
	
	try
	{
		// Firefox, Opera 8.0+, Safari
		xmlHttp=new XMLHttpRequest();
	}
	catch (e)
	{
		//Internet Explorer
		try
		{
			xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
		}
		catch (e)
		{
			xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
		}
	}
	
	return xmlHttp;
}	

function ajax_call(page)
{ 	
	xmlHttp.open("GET",page,true)
	xmlHttp.send(null)
}