var n = 15;
var f = false;
var b = new Array;
function prel(){

   	if(document.images) {
	  for(i=1;i<=n;i++)
               {str = '/upload/gallery/large/'+i;
               b[i-1] = new Image();
               b[i-1].src = str;
}f = true;
 		}
}

function on(im){
	
		document.all['view'].src="/upload/gallery/large/"+im;
		
}
function off(im){
	if (document.images && (f == true))
		{document.images[im].src = "/images/spacer.gif";}
}