function byId(_id){return document.getElementById(_id)}
function JITc(url){
	if(document.getElementById('JQX')){document.getElementsByTagName('head')[0].removeChild(document.getElementById('JQX'))};
	script = document.createElement('script');	
	script.type = 'text/javascript';	
	script.defer = true;	
	script.id = 'JQX';	
	script.src=url 	
	document.getElementsByTagName('head')[0].appendChild(script);
}