function mpLoadFile(filename, filetype){

	//if filename is a external JavaScript file
	if (filetype=="js"){
		var fileref=document.createElement('script')
		fileref.setAttribute("type","text/javascript")
		fileref.setAttribute("src", filename)
	
	//if filename is an external CSS file
	}else if (filetype=="css"){
		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);

}