鼠标经过加载大图

main.js

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function openScript(url, width, height){
 var Win = window.open(url,"openScript",'width=' + width + ',height=' + height + ',resizable=1,scrollbars=yes,menubar=no,status=no' );
}
//***********默认设置定义.*********************
tPopWait=500;//停留毫秒后显示提示。
tPopShow=5000;//显示毫秒后慢慢转为透明，即消失
showPopStep=20;
popOpacity=99;//颜色最深的时候0为透明

//***************内部变量定义*****************
sPop=null;
curShow=null;
tFadeOut=null;
tFadeIn=null;
tFadeWaiting=null;

document.write("<style type='text/css'id='defaultPopStyle'>");
document.write(".cPopText {  background-color: #ffffff; border: 1px #555555 solid; font-size: 12px; padding-right: 4px; padding-left: 4px; height: 20px; padding-top: 2px; padding-bottom: 2px; filter: Alpha(Opacity=0)}");

document.write("</style>");
document.write("<div id='ncpopLayer' style='position:absolute;z-index:1000;' class='cPopText'></div>");

function showPopupText(){
var o=event.srcElement;
 MouseX=event.x;
 MouseY=event.y;
 if(o.alt!=null && o.alt!=""){o.ncpop=o.alt;o.alt=""};
        if(o.title!=null && o.title!=""){o.ncpop=o.title;o.title=""};
 if(o.ncpop!=sPop) {
   sPop=o.ncpop;
   clearTimeout(curShow);
   clearTimeout(tFadeOut);
   clearTimeout(tFadeIn);
   clearTimeout(tFadeWaiting); 
   if(sPop==null || sPop=="") {
    ncpopLayer.innerHTML="";
    ncpopLayer.style.filter="Alpha()";
    ncpopLayer.filters.Alpha.opacity=0; 
    }
   else {
    if(o.dyclass!=null) popStyle=o.dyclass
     else popStyle="cPopText";
    curShow=setTimeout("showIt()",tPopWait);
   }
   
 }
}

function showIt(){
  ncpopLayer.className=popStyle;
  ncpopLayer.innerHTML=sPop;
  popWidth=ncpopLayer.clientWidth;
  popHeight=ncpopLayer.clientHeight;
  if(MouseX+12+popWidth>document.body.clientWidth) popLeftAdjust=-popWidth-24
   else popLeftAdjust=0;
  if(MouseY+12+popHeight>document.body.clientHeight) popTopAdjust=-popHeight-24
   else popTopAdjust=0;
  ncpopLayer.style.left=MouseX+12+document.body.scrollLeft+popLeftAdjust;
  ncpopLayer.style.top=MouseY+12+document.body.scrollTop+popTopAdjust;
  ncpopLayer.style.filter="Alpha(Opacity=0)";
  fadeOut();
}

function fadeOut(){
 if(ncpopLayer.filters.Alpha.opacity<popOpacity) {
  ncpopLayer.filters.Alpha.opacity+=showPopStep;
  tFadeOut=setTimeout("fadeOut()",1);
  }
  else {
   ncpopLayer.filters.Alpha.opacity=popOpacity;
   tFadeWaiting=setTimeout("fadeIn()",tPopShow);
   }
}

function fadeIn(){
 if(ncpopLayer.filters.Alpha.opacity>0) {
  ncpopLayer.filters.Alpha.opacity-=1;
  tFadeIn=setTimeout("fadeIn()",1);
  }
}
document.onmouseover=showPopupText; 

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productmain.asp

加<SCRIPT language=JavaScript src="js/main.js"></SCRIPT>

然后

<img src="<%=rsArticle("DefaultPicUrl")%>" width="110" height="110" border="0" align='absmiddle' alt='点击查看大图：<br> <img src=<%=rsArticle("DefaultPicUrl")%> border=1>'>