london=new Image(156,120)
london_m=new Image(156,120)
cambridge=new Image(156,120)
cambridge_m=new Image(156,120)
birmingham=new Image(156,120)
birmingham_m=new Image(156,120)
london.src="images/index_lon.jpg"
london_m.src="images/index_lon_m.jpg"
cambridge.src="images/index_camb.jpg"
cambridge_m.src="images/index_camb_m.jpg"
birmingham.src="images/index_bham.jpg"
birmingham_m.src="images/index_bham_m.jpg"

function mouseswapper(iconname,iconpath,isover){
if (document.images){
	if (isover==1){
		document.images[iconname].src=eval(iconpath+"_m.src");
		}
	else {
		document.images[iconname].src=eval(iconpath+".src");
		}
	return true;
	}
}