图片放大镜特效-JS特效-爱易网页

图片放大镜特效

日期：2014-05-18　浏览次数：20157 次

以下是程序代码

<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<meta name="keywords" content="站长,网页特效,js特效,广告代码,zzjs,zzjs.net,sky,www.zzjs.net,站长特效 网" />
<meta name="description" content="www.zzjs.net,站长特效网，站长必备js特效及广告代码。大量高质量js特效，提供高质量广告代码下载,尽在站长特效网" />
<title>图片放大镜特效，sky整理收集，站长特效网欢迎您。</title>
<SCRIPT>
var shrinkfactor=5
// left and top position of the thumbnailimage
// (distance to the left and top browser-margin, pixels)
var thumbleft = 30
var thumbtop = 30
// left and top position of the zoomed image
// (distance to the left and top browser-margin, pixels)
var largeleft = 300
var largetop = 30
// width and height of the enlarged image's sector (visible part, pixels)
var clipwidth = 240
var clipheight = 160
</SCRIPT>
<SCRIPT>
var isNav, isIE
var offsetX, offsetY
var selectedObj
//欢迎来到站长特效网，我们的网址是www.zzjs.net，很好记，zz站长，js就是js特效，本站收集大量高质量js代码，还有许多广告代码下载。
var largewidth = 0
var largeheight = 0
var thumbwidth = Math.floor(largewidth/shrinkfactor)
var thumbheight = Math.floor(largeheight/shrinkfactor)
var dragimgwidth = Math.floor(clipwidth/shrinkfactor)
var dragimgheight = Math.floor(clipheight/shrinkfactor)
var dragimgleft = thumbleft+3
var dragimgtop = thumbtop+3
var difleft= largeleft-thumbleft
var diftop= largetop-thumbtop
var clippoints
var cliptop=0
var clipbottom=cliptop+clipheight
var clipleft=0
var clipright=clipleft+clipwidth
if (parseInt(navigator.appVersion) >= 4) {
	if (navigator.appName == "Netscape") {
		isNav = true
	} else {
		isIE = true
	}
}
function setZIndex(obj, zOrder) {
	obj.zIndex = zOrder
}
function shiftTo(obj, x, y) {
	if (isNav) {
        if(x<=document.thumb.left) {x=document.thumb.left}
		if(x>=(document.thumb.left+thumbwidth-dragimgwidth-2)) {x=document.thumb.left+thumbwidth-dragimgwidth-2}
		if(y<=document.thumb.top) {y=document.thumb.top}
		if(y>=(document.thumb.top+thumbheight-dragimgheight-2)) {y=document.thumb.top+thumbheight-dragimgheight-2}
		obj.moveTo(x,y)
	} else {
		if(x<=document.all.thumb.style.posLeft) {x=document.all.thumb.style.posLeft}
		if(x>=(document.all.thumb.style.posLeft+thumbwidth-dragimgwidth-2)) {x=document.all.thumb.style.posLeft+thumbwidth-dragimgwidth-2}
		if(y<=document.all.thumb.style.posTop) {y=document.all.thumb.style.posTop}
		if(y>=(document.all.thumb.style.posTop+thumbheight-dragimgheight-2)) {y=document.all.thumb.style.posTop+thumbheight-dragimgheight-2}
		obj.pixelLeft = x
		obj.pixelTop = y
	}
	cliptop = (y-thumbtop)*shrinkfactor
	clipbottom = cliptop+clipheight
	clipleft = (x-thumbleft)*shrinkfactor
	clipright = clipleft+clipwidth
	if (document.all) {
		clippoints ="rect("+cliptop+" "+clipright+" "+clipbottom+" "+clipleft+")"
		document.all.large.style.posTop=largetop-cliptop
		document.all.large.style.posLeft=largeleft-clipleft
		document.all.large.style.clip=clippoints
	}
	if (document.layers) {
		document.large.top=largetop-cliptop
		document.large.left=largeleft-clipleft
		document.large.clip.left = clipleft
		document.large.clip.right = clipright
		document.large.clip.top = cliptop
		document.large.clip.bottom = clipbottom
	}
}//欢迎来到站长特效网，我们的网址是www.zzjs.net，很好记，zz站长，js就是js特效，本站收集大量高质量js代码，还有许多广告代码下载。
function setSelectedElem(evt) {
	if (isNav) {
		var testObj
		var clickX = evt.pageX
		var clickY = evt.pageY
		for (var i = document.layers.length - 1; i >= 0; i--) {
			testObj = document.layers[i]
			if ((clickX > testObj.left) &&
				(clickX < testObj.left + testObj.clip.width) &&
				(clickY > testObj.top) &&
				(clickY < testObj.top + testObj.clip.height && document.layers[i].id=="dragimg")) {
					selectedObj = testObj
					setZIndex(selectedObj, 100)
					return
			}
		}
	} else {
		var imgO</div></div>

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