javascript彈出層執行個體代碼

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 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><title>彈窗</title><style type="text/css">body{margin:0;padding:0;}#bg{background:#000;position:absolute;left:0;top:0;filter:"Alpha(opacity=20)";opacity:0.2;display:none;}#win{width:200px;height:200px;position:absolute;left:50%;top:50%;margin:-100px -100px 0;border:4px #F00 solid;background:#FFF;display:none;}</style></head> <body><a href="javascript:;" onclick="WinTip()">彈出</a><div id="bg"></div><div id="win"><a href="javascript:;" onclick="WinTip()">關閉</a></div></body><script type="application/javascript">var $=function(id){return document.getElementById(id);}function WinTip(){var win=new WinSize();var Tip=$("bg");Tip.style.width=win.W+"px";Tip.style.height=win.H+"px";if(Tip.style.display=="block"){Tip.style.display="none";$("win").style.display="none";}else{Tip.style.display="block";$("win").style.display="block";}}function WinSize() //函數:擷取尺寸{var winWidth = 0;var winHeight = 0;if (window.innerWidth)winWidth = window.innerWidth;else if ((document.body) && (document.body.clientWidth))winWidth = document.body.clientWidth;if (window.innerHeight)winHeight = window.innerHeight;else if ((document.body) && (document.body.clientHeight))winHeight = document.body.clientHeight;if (document.documentElement  && document.documentElement.clientHeight && document.documentElement.clientWidth){winHeight = document.documentElement.clientHeight;winWidth = document.documentElement.clientWidth;}return{"W":winWidth,"H":winHeight}}</script></html></td> </tr></table>

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