var Detector = function(){
	var h = document.getElementsByTagName("BODY")[0];
	var d = document.createElement("DIV");
	var s = document.createElement("SPAN");
	d.appendChild(s);
	d.style.fontFamily = "sans";			
	s.style.fontFamily = "sans";			
	s.style.fontSize   = "72px";			
	s.innerHTML        = "mmmmmmmmmmlil";		
	h.appendChild(d);
	var defaultWidth   = s.offsetWidth;		
	var defaultHeight  = s.offsetHeight;	
	h.removeChild(d);
	
	function debug(font) {
		h.appendChild(d);
		var f = [];
		f[0] = s.style.fontFamily = font;	
		f[1] = s.offsetWidth;				
		f[2] = s.offsetHeight;				
		h.removeChild(d);
		font = font.toLowerCase();
		if (font == "serif") {
			f[3] = true;	
		} else {
			f[3] = (f[1] != defaultWidth || f[2] != defaultHeight);
		}
		return f;
	}
	function test(font){
		f = debug(font);
		return f[3];
	}
	this.detailedTest = debug;
	this.test = test;	
}