转 JS图片特效【鼠标放在小图上显示大图】 -

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转 JS图片特效【鼠标放在小图上显示大图】

JavaScript CSS HTML BBS .net

            
      
     <html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>JS图片特效</title>
<style type="text/css" media="screen">
div#PreviewBox{
  position:absolute;
  padding-left:6px;
  display: none;
  Z-INDEX:2006;
}
div#PreviewBox span{
  width:7px;
  height:13px;
  position:absolute;
  left:0px;
  top:9px;
  background:url() 0 0 no-repeat;
}
div#PreviewBox div.Picture{
  float:left;
  border:1px #666 solid;
  background:#FFF;
}
div#PreviewBox div.Picture div{
  border:4px #e8e8e8 solid;
}
div#PreviewBox div.Picture div a img{
  margin:19px;
  border:1px #b6b6b6 solid;
  display: block;
  max-height: 250px;
  max-width: 250px;
}
</style>
</head>
<body>
<script>
var maxWidth=250;
var maxHeight=250;
function getPosXY(a,offset) {
       var p=offset?offset.slice(0):[0,0],tn;
       while(a) {
           tn=a.tagName.toUpperCase();
           if(tn=='IMG') {
              a=a.offsetParent;continue;
           }
          p[0]+=a.offsetLeft-(tn=="DIV"&&a.scrollLeft?a.scrollLeft:0);
          p[1]+=a.offsetTop-(tn=="DIV"&&a.scrollTop?a.scrollTop:0);
          if(tn=="BODY")
                break;
          a=a.offsetParent;
      }
      return p;
}
function checkComplete() {
     if(checkComplete.__img&&checkComplete.__img.complete)
              checkComplete.__onload();
}
checkComplete.__onload=function() {
         clearInterval(checkComplete.__timeId);
         var w=checkComplete.__img.width;
         var h=checkComplete.__img.height;
         if(w>=h&&w>maxWidth) {
              previewImage.style.width=maxWidth+'px';
         }
        else if(h>=w&&h>maxHeight) {
              previewImage.style.height=maxHeight+'px';
        }
        else {
              previewImage.style.width=previewImage.style.height='';
        }
       previewImage.src=checkComplete.__img.src;previewUrl.href=checkComplete.href;checkComplete.__img=null;
}
function showPreview(e) {
         hidePreview (e);
         previewFrom=e.target||e.srcElement;
         previewImage.src=loadingImg;
         previewImage.style.width=previewImage.style.height='';
         previewTimeoutId=setTimeout('_showPreview()',500);
         checkComplete.__img=null;
}
function hidePreview(e) {
        if(e) {
            var toElement=e.relatedTarget||e.toElement;
            while(toElement) {
                  if(toElement.id=='PreviewBox')
                          return;
                  toElement=toElement.parentNode;
            }
       }
       try {
            clearInterval(checkComplete.__timeId);
            checkComplete.__img=null;
            previewImage.src=null;
       }
       catch(e) {}
       clearTimeout(previewTimeoutId);
       previewBox.style.display='none';
}
function _showPreview() {
        checkComplete.__img=new Image();
        if(previewFrom.tagName.toUpperCase()=='A')
               previewFrom=previewFrom.getElementsByTagName('img')[0];
        var largeSrc=previewFrom.getAttribute("large-src");
        var picLink=previewFrom.getAttribute("pic-link");
        if(!largeSrc)
             return;
        else {
             checkComplete.__img.src=largeSrc;
             checkComplete.href=picLink;
             checkComplete.__timeId=setInterval("checkComplete()",20);
             var pos=getPosXY(previewFrom,[106,26]);
             previewBox.style.left=pos[0]+'px';
             previewBox.style.top=pos[1]+'px';
             previewBox.style.display='block';
        }
}
</script>
<div id="PreviewBox" onmouseout="hidePreview(event);">
  <div class="Picture" onmouseout="hidePreview(event);">
   <span></span>
   <div>
    <a id="previewUrl" href="javascript:void(0)" target="_blank">caiying2007<img oncontextmenu="return(false)" id="PreviewImage" src="about:blank" border="0" onmouseout="hidePreview(event);" /></a>
   </div>
  </div>
</div>
<script language="javascript" type="text/javascript">
var previewBox = document.getElementById('PreviewBox');
var previewImage = document.getElementById('PreviewImage');
var previewUrl = document.getElementById('previewUrl');
var previewFrom = null;
var previewTimeoutId = null;
var loadingImg = 'http://img.taobao.com/2k6/sys/list/loading.gif';
</script>
<a href="####" onmouseover='showPreview(event);' onmouseout='hidePreview(event);'>
<img src="http://pagead2.googlesyndication.com/pagead/imgad?id=CIzU1qighKqphQEQyAEYvQEyCJXvZrbNiPpO" alt="" large-src="http://pagead2.googlesyndication.com/pagead/imgad?id=CPPis6646vaWqgEQrAIY7wEyCPL_W8tnwBVd" pic-link="http://bbs.blueidea.com/thread-2784770-1-1.html"  border="0" width="100"/></a>
</body>
</html>
    
演示地址http://www.aspxcs.net/HTML/1250401022.html

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