<!-- preload images -->
<!-- Begin
	img = new Array()
	
	img[0] = "images/btn_home_off.gif"	     
	img[1] = "images/btn_home_on.gif"	
	img[2] = "images/btn_research_off.gif"	
	img[3] = "images/btn_research_on.gif"	
	img[4] = "images/btn_services_off.gif"	
	img[5] = "images/btn_services_on.gif"	
	img[6] = "images/btn_help_off.gif"	
	img[7] = "images/btn_help_on.gif"	
	
	im = new Array()									  
	for (var i = 0; i < img.length; i++){
   		im[i] = new Image()
       		im[i].src = img[i]
	}

	function swap(num,imgname){
   		imgname.src = im[num].src
	}
	
// End -->