gistfile1.js

Role('JooseX.Namespace.Depended.Transport.ScriptTag', {
    
    requires : [ 'handleLoad' ],
    
    override : {
        
        load: function (url, onsuccess, onerror) {
            //load URL, on success call onsuccess(strData, url);, on error call onerror(e);
        	
        	var newscript = document.createElement('script'),
        	head = document.getElementsByTagName('head')[0] || document.documentElement;

        	newscript.type = 'text/javascript';
        	newscript.src  = url;
        	newscript.onload = newscript.onreadystatechange = function() {
        		if(newscript.readyState) {  // IE
        			if(newscript.readyState === 'complete' || newscript.readyState === 'loaded') {
        				newscript.onreadystatechange = null;
        				onsuccess(newscript.text, url) //SUCCESS
	                }
	            }
	            else {  // non-IE
	            	onsuccess(newscript.text, url) //SUCCESS
	            }
        	};
	        newscript.onerror = newscript.onreadystatechange = function () {
	            if(newscript.readyState) { // IE
	                if(newscript.readyState === 'error') {
	                    onerror(url + " load failed."); //ERROR
	                }
	            }
	            else { // non-IE
	            	onerror(url + " load failed."); //ERROR
	            }
	        };
	        head.insertBefore(newscript, head.firstChild);
        },
        
        materialize : function() {}
    }
})