var xmlhttp;
			var browser = navigator.appName;
			if(browser == "Microsoft Internet Explorer"){
				xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
			}
			else{
				xmlhttp = new XMLHttpRequest();
			}
			function media_log(teacher,title_,media){
				//just perform a basic xmlhttp request!
				
				url_ = "/php/media_log.php?teacher="+ teacher+ "&title="+title_+"&media="+media+"&dammy="+Math.random();
				xmlhttp.open("GET", url_,false)
	   	 	xmlhttp.send(null);  
			}