window.onerror=null;
if (document.images) {
  namesx = new Array( "aboutx", "packagesx", "portfoliox", "ratesx", "contactx" );
  itemsx = new Array(10);
  for (i=0; i<=9; i++)
     {
	 itemsx[i] = new Image(); }
     itemsx[0].src = "images/about_off.gif";
     itemsx[1].src = "images/packages_off.gif";
	 itemsx[2].src = "images/portfolio_off.gif";
   	 itemsx[3].src = "images/servcies_off.gif";
     itemsx[4].src = "images/contact_off.gif";
	 
     itemsx[5].src = "images/about_on.gif";
     itemsx[6].src = "images/packages_on.gif";
	 itemsx[7].src = "images/portfolio_on.gif";	
     itemsx[8].src = "images/services_on.gif"; 
     itemsx[9].src = "images/contact_on.gif";
	 }

  function swapx(des,num) {
    if (document.images)
      { document.images[namesx[des]].src = itemsx[num].src; }
  }