var temp;
	function fullscreen (myfile, myname, width, height)
	{

		if(temp)
		{
			if(!temp.closed)
				{
				temp.close();temp="";
				}
		}
    	params = "width=" + width + ",height=" + height + ",scrollbars=1,dependent=1,locationbar=0,menubar=0,resizeable=1,status=1,screenx=10,screeny=10,top=10,left=10";
    	newwin = window.open(myfile , myname , params)	;
		temp = newwin;
		temp.name = "temp";
		newwin="";
	}