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'; 
        } 
}