function imgZoom(n,w,h){
				var o=new Image();o.src=n.src;
				function wz(){n.width=w;n.height=w/o.width*o.height;}
				function hz(){n.height=h;n.width=h/o.height*o.width;}
				if(w&&!h)wz();
				if(!w&&h)hz();
				if(w&&h)
					if(o.width>w)wz();
					if(n.height>h)hz();
					delete o;
			}