用鼠标滚轮来缩放控制网页中图片的大小！

<script language = "JavaScript"> function bbimg(o){ var zoom=parseInt(o.style.zoom, 10)||100;zoom+=event.wheelDelta/12; if(zoom>0) o.style.zoom=zoom+'%'; return false;} </script> <img src="http://www.7stk.com/image/logo.GIF" border=0 onmousewheel="return bbimg(this)" onload="javascript:if(this.width>screen.width-600) this.style.width=screen.width-600;">