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<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：獲取尺寸 { 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>