function createRequest()
	{
	var xmlhttp = null;
	// code for IE7+, Firefox, Chrome, Opera, Safari
	if (window.XMLHttpRequest) { xmlhttp=new XMLHttpRequest(); }
	// code for IE6, IE5
	else if (window.ActiveXObject) { xmlhttp=new ActiveXObject("Microsoft.XMLHTTP"); }
	else { alert("Your browser does not support XMLHTTP!"); return false; }
	if (xmlhttp) { return xmlhttp };
	}