function loadContent(file) {
	var head = document.getElementsByTagName('head').item(0);
	var scriptTag = document.getElementById('loadScript');
	if(scriptTag) head.removeChild(scriptTag);
	script = document.createElement('script');
	var ranNum= Math.round(Math.random()*Math.random()*1000);
	script.src = file + "&random=" + ranNum;
	script.type = 'text/javascript';
	script.id = 'loadScript';
	head.appendChild(script);
}