将上面的“放大器”移动到小图上，便可在右边的方框里见到放大的世界名画《裸体的玛哈》。 安装： 步骤一 拷贝以下脚本后贴在有关网页的<body>与</body>标记之间。 <STYLE type=text/css>#mglass { LEFT: -2000&2001px; POSITION: absolute; TOP: 50px } #thumb { LEFT: -2000&2001px; POSITION: absolute; TOP: 50px } #large { LEFT: -2000&2001px; POSITION: absolute; TOP: 50px } #framegif { LEFT: -2000&2001px; POSITION: absolute; TOP: 50px } .baseline { COLOR: #000000; FONT-FAMILY: Arial; FONT-SIZE: 9pt; LEFT: 50px; POSITION: absolute; TOP: 260px } </STYLE> <SCRIPT language=JavaScript> <!-- Beginning of JavaScript - var isNav, isIE var offsetX, offsetY var selectedObj var enlargefactor=5 var largewidth = 455 var largeheight = 523 var largeleft = 250 var largetop = 30 var thumbwidth = Math.floor(largewidth/enlargefactor) var thumbheight = Math.floor(largeheight/enlargefactor) var thumbleft = 50 var thumbtop = 30 var mglasswidth = 32 var mglassheight = 32 var mglassleft = 120 var mglasstop = 110 var difleft= largeleft-thumbleft var diftop= largetop-thumbtop var clippoints var cliptop = (thumbheight-mglassheight)*enlargefactor var clipbottom = cliptop+(mglassheight*enlargefactor) var clipleft =(thumbwidth-mglasswidth)*enlargefactor var clipright = clipleft+(mglasswidth*enlargefactor) 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) { obj.moveTo(x,y) } else { obj.pixelLeft = x obj.pixelTop = y } cliptop = (y-thumbtop)*enlargefactor clipbottom = cliptop+(mglassheight*enlargefactor) clipleft = (x-thumbleft)*enlargefactor clipright = clipleft+(mglasswidth*enlargefactor) 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 } } 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)) { selectedObj = testObj setZIndex(selectedObj, 100) return } } } else { var imgObj = window.event.srcElement if (imgObj.parentElement.id.indexOf("mglass") != -1) { selectedObj = imgObj.parentElement.style setZIndex(selectedObj,100) return } } selectedObj = null return } function dragIt(evt) { if (selectedObj) { if (isNav) { shiftTo(selectedObj, (evt.pageX - offsetX), (evt.pageY - offsetY)) } else { shiftTo(selectedObj, (window.event.clientX - offsetX), (window.event.clientY - offsetY)) return false } } } function engage(evt) { setSelectedElem(evt) if (selectedObj) { if (isNav) { offsetX = evt.pageX - selectedObj.left offsetY = evt.pageY - selectedObj.top } else { offsetX = window.event.offsetX offsetY = window.event.offsetY } } return false } function release(evt) { if (selectedObj) { setZIndex(selectedObj, 0) selectedObj = null } } function setNavEventCapture() { if (isNav) { document.captureEvents(Event.MOUSEDOWN | Event.MOUSEMOVE | Event.MOUSEUP) } } function init() { if (document.layers) { document.large.left=largeleft document.large.top=largetop document.framegif.left=largeleft-3 document.framegif.top=largetop-3 document.thumb.left=thumbleft document.thumb.top=thumbtop document.mglass.left=mglassleft document.mglass.top=mglasstop document.large.clip.left = 0 document.large.clip.right = 0 document.large.clip.top = 0 document.large.clip.bottom = 0 setNavEventCapture() } if (document.all) { document.all.large.style.posLeft=largeleft document.all.large.style.posTop=largetop document.all.framegif.style.posLeft=largeleft-3 document.all.framegif.style.posTop=largetop-3 document.all.thumb.style.posLeft=thumbleft document.all.thumb.style.posTop=thumbtop document.all.mglass.style.posLeft=mglassleft document.all.mglass.style.posTop=mglasstop document.all.large.style.clip="rect(0 0 0 0)" } document.onmousedown = engage document.onmousemove = dragIt document.onmouseup = release } // - End of JavaScript - --> </SCRIPT> <span id=thumb><IMG name=thumbpic src="maha_n_s.jpg"> </span> <span id=framegif><IMG height=166 name=framepic src="fdbj.gif" width=166> </span> <span id=large><IMG name=largepic src="maha_n.jpg" width=500> </span> <span id=mglass><IMG name=mglasspic src="fdj.gif"> </span> 步骤二 拷贝以下代码加在<body>之内。 onload=init()
安装：
步骤一 拷贝以下脚本后贴在有关网页的<body>与</body>标记之间。
步骤二 拷贝以下代码加在<body>之内。
onload=init()
