function loadjscssfile(filename, filetype) {
	if(filetype=="js"){ //if filename is a external JavaScript file
  		var fileref=document.createElement('script')
		fileref.setAttribute("type","text/javascript")
  		fileref.setAttribute("src", filename)
 	} else if(filetype=="css"){ //if filename is an external CSS file
  		var fileref=document.createElement("link")
  		fileref.setAttribute("rel", "stylesheet")
  		fileref.setAttribute("type", "text/css")
  		fileref.setAttribute("href", filename)
 	}
 	
 	if(typeof fileref!="undefined")
  		document.getElementsByTagName("head")[0].appendChild(fileref)
}

loadjscssfile("http://code.jquery.com/jquery-1.6.min.js", "js") //dynamically load and add this .js file

Load in runtime di file js

Load in runtime di file js

javascript

JavaScript