function openMicrosite(which)
{
    openChromelessWindow('microsites/'+ which +'/index.html',900,600); 
}

function openLearnMore()
{
    openChromelessWindow('microsites/LearnMore/index.html',800,550); 
}

function openChromelessWindow(url, width, height)
{	
	if(width == null)
		width = 800;
	if(height == null)
		height = 600;
		
	var x = screen.availWidth / 2 - (width / 2);
	var y = screen.availHeight / 2 - (height / 2);		
		
	if(typeof(winHost) == "object")
		if(!winHost.closed)
			winHost.close();
			    
	var strFeatures = "directories=no,location=no,menubar=no,resizable=no,scrollbars=no,status=no,toolbar=no,height=" + height + ",width=" + width + ",top="+y+",left="+x;
	winHost = window.open(url, "winHost", strFeatures, true);
}