CSS js pops up centered background semi-transparent div layer_html/css

CSS js pop-up centered background translucent div layer丨Xinqing web page special effects丨CsrCode.Cn</title> ; <br /><style type= " text/css "> <br>body{margin:0px;} <br>#bg{width: 100%;height: 100%;top:0px;left:0px; position:absolute;filter: Alpha(opacity= 50);opacity: 0.5; background:# 000000; display:none;} <br>#popbox{position:absolute;width:400px; height:400px; left: 50%; top: 50%; margin:-200px 0 0 -200px; display:none; background:# 666666;} <br></style> <br><script type= " text/javascript "> <br> function pupopen(){ <br> document.getElementById( " bg ").style.display= " block "; <br> document.getElementById( " popbox ").style.display= " block " ; <br> } <br> <br>function pupclose(){ <br>document.getElementById( " bg ").style.display= " none "; <br>} <br></script> <br></head> <br><body> <br> </br> <br>CSS pop-up layer, or pop-up window, background half Transparent style pop-up box, </br> is very suitable for website login, user registration, and announcement prompts. </br>Both IE, FF, and OP can ~ pop-up windows, the background is semi-transparent </br> <br> Principle: two layers, one with a height and width of 100%, and the other is the window you want to pop up The specific content,</br>For translucency in IE, use filter: Alpha(opacity= 60); in non-IE, use opacity: 0.60; <br></br></br>　 <a href= " # " onclick= " popopen() ">Click here to open the window</a> <br><div id= " bg "></div> <br><div id= " popbox ">Two layers, one with a height and width of 100%, and the other with the specific content of the window you want to pop up. For translucency, use filter: Alpha (opacity= 60) in IE; in non-IE opacity: 0.60; <br><br> <br><br> <br><br> /a> <br></div> <br></body> <br></html> <br> <br><br><br><hr><p align= " center "><font color=black>This special effect is provided by <a href= " http://www.CsrCode.cn " target= " _blank ">Xinqing web special effects</a>丨CsrCode. Cn is collected from the Internet, only for interest and learning exchange, not for commercial purposes. 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