1 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 2 <html xmlns="http://www.w3.org/1999/xhtml"> 3 <head> 4 <title>DIV CSS遮罩层</title> 5 <script language="javascript" type="text/javascript"> 6 function showdiv() { 7 document.getElementById("bg").style.display ="block"; 8 document.getElementById("show").style.display ="block"; 9 } 10 function hidediv() { 11 document.getElementById("bg").style.display ='none'; 12 document.getElementById("show").style.display ='none'; 13 } 14 </script> 15 <style type="text/css"> 16 #bg{ display: none; position: absolute; top: 0%; left: 0%; width: 100%; height: 100%; background-color: black; z-index:1001; -moz-opacity: 0.7; opacity:.70; filter: alpha(opacity=70);} 17 #show{display: none; position: absolute; top: 25%; left: 22%; width: 53%; height: 49%; padding: 8px; border: 8px solid #E8E9F7; background-color: white; z-index:1002; overflow: auto;} 18 </style> 19 </head> 20 <body> 21 <input id="btnshow" type="button" value="Show" onclick="showdiv();"/> 22 <div id="bg"></div> 23 <div id="show">测试