点击后放大图片

鼠标点击看效果

脚本说明:
把如下代码加入<body>区域中
<script>

function enlarge(which,e){
//Render image code for IE 4+
if (document.all){
if (showimage.style.visibility=="hidden"){
showimage.style.left=document.body.scrollLeft+event.clientX
showimage.style.top=document.body.scrollTop+event.clientY
showimage.innerHTML='<img src="'+which+'">'
showimage.style.visibility="visible"
}
else
showimage.style.visibility="hidden"
return false
}
//Render image code for NS 4
else if (document.layers){
if (document.showimage.visibility=="hide"){
document.showimage.document.write('<a href="#" onMouseover="drag_dropns(showimage)"><img src="'+which+'" border=0></a>')
document.showimage.document.close()
document.showimage.left=e.x
document.showimage.top=e.y
document.showimage.visibility="show"
}
else
document.showimage.visibility="hide"
return false
}
//if NOT IE 4+ or NS 4, simply display image in full browser window
else
return true
}

</script>

var nsx
var nsy
var nstemp

function drag_dropns(name){
temp=eval(name)
temp.captureEvents(Event.MOUSEDOWN | Event.MOUSEUP)
temp.onmousedown=gons
temp.onmousemove=dragns
temp.onmouseup=stopns
}

function gons(e){
temp.captureEvents(Event.MOUSEMOVE)
nsx=e.x
nsy=e.y
}
function dragns(e){
temp.moveBy(e.x-nsx,e.y-nsy)
return false
}

function stopns(){
temp.releaseEvents(Event.MOUSEMOVE)
}

//drag drop function for IE 4+////
/////////////////////////////////

var dragapproved=false

function drag_dropie(){
if (dragapproved==true){
document.all.showimage.style.pixelLeft=tempx+event.clientX-iex
document.all.showimage.style.pixelTop=tempy+event.clientY-iey
return false
}
}

function initializedragie(){
if (event.srcElement.parentElement.id=="showimage"){
iex=event.clientX
iey=event.clientY
tempx=showimage.style.pixelLeft
tempy=showimage.style.pixelTop
dragapproved=true
document.onmousemove=drag_dropie
}
}

if (document.all){
document.onmousedown=initializedragie
document.onmouseup=new Function("dragapproved=false")
}
</script>
<div id="showimage" style="position:absolute;visibility:hidden"></div>
<a href="www.7stk.com" onClick="return enlarge('portrait23.jpg',event)"><img src="portrait22.jpg" border="0"></a>