large=new Image();
large2=new Image();
large3=new Image();
large.src ="1.jpg"
large2.src ="2.jpg"
large3.src ="3.jpg"
function largeimage(thumbs){
if(thumbs==1){document.images['large'].src=large.src;}
if(thumbs==2){document.images['large'].src=large2.src;}
if(thumbs==3){document.images['large'].src=large3.src;}
}