function imageswitch() {
  var randomnumber=Math.floor(Math.random()*11)
  randomnumber = randomnumber + 1;
  document.getElementById("header").style.background = 'url(/Web/images/top'+randomnumber+'.jpg)';
}
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 requestDemo(demotype,demoname,demoagency,demophone)
{   
		var xmlHttp;
		xmlHttp=GetXmlHttpObject()
		if (xmlHttp==null)
			{
			alert ("Your browser does not support AJAX!");
			return;
			} 
		var url="requestDemo.asp";
		url=url+"?demotype="+demotype;
		url=url+"&demoname="+demoname;
		url=url+"&demoagency="+demoagency;
		url=url+"&demophone="+demophone;
		xmlHttp.open("GET",url,true);
		xmlHttp.send(null);
		alert("Request Sent.")
}