if (document.images) {
  		btn_whatsonon = new Image(); 
  		btn_whatsonon.src = "images/btn_whatson_.gif";
<!--		btn_havingfunon = new Image();
<!--  		btn_havingfunon.src = "images/btn_havingfun_.gif";
<!--  		btn_your2centson = new Image();
<!--  		btn_your2centson.src = "images/btn_your2cents_.gif";
<!--		btn_yoursayon = new Image();
<!--  		btn_yoursayon.src = "images/btn_yoursay_.gif";
<!--  		btn_studentresourceson = new Image();
<!--  		btn_studentresourceson.src = "images/btn_studentresources_.gif";
<!--  		btn_mediaandnewson = new Image();
<!--  		btn_mediaandnewson.src = "images/btn_mediaandnews_.gif";
<!--  		btn_corporatepartnershipon = new Image();
<!--  		btn_corporatepartnershipon.src = "images/btn_corporatepartnership_.gif";
		
  		btn_whatsonoff = new Image(); 
  		btn_whatsonoff.src = "images/btn_whatson.gif";
<!--		btn_havingfunoff = new Image();
<!--  		btn_havingfunoff.src = "images/btn_havingfun.gif";
<!--  		btn_your2centsoff = new Image();
<!--  		btn_your2centsoff.src = "images/btn_your2cents.gif";
<!--		btn_yoursayoff = new Image();
<!--  		btn_yoursayoff.src = "images/btn_yoursay.gif";
<!--  		btn_studentresourcesoff = new Image();
<!--  		btn_studentresourcesoff.src = "images/btn_studentresources.gif";
<!--  		btn_mediaandnewsoff = new Image();
<!--  		btn_mediaandnewsoff.src = "images/btn_mediaandnews.gif";
<!--  		btn_corporatepartnershipoff = new Image();
<!--  		btn_corporatepartnershipoff.src = "images/btn_corporatepartnership.gif";

  	}

	function changeImages() {
  		if (document.images) {
   			for (var i=0; i<changeImages.arguments.length; i+=2) {
      			document[changeImages.arguments[i]].src = eval(changeImages.arguments[i+1] + ".src");
    			}
  			}
		}