1function loadScript( url, callback ) {
2  var script = document.createElement( "script" )
3  	  script.type = "text/javascript";
4 	  script.onload = function() {
5     	callback()
6      };
7}
8// call the function...
9loadScript("js/myscript.js", function() {
10  alert('script ready!'); 
11});