如何实现击按钮关闭图片？

这个代码能够打开图片,但是如何实现点击按钮关闭图片,然后返回.<%@LANGUAGE="JAVASCRIPT" CODEPAGE="65001"%>
<!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> www.guang.cc </title><script type="text/javascript" >
function login()
{
    sWidth=document.body.offsetWidth;
    sHeight=screen.height;        
    
    var bgObj = document.getElementById('divBG');
    bgObj.style.filter="progid:DXImageTransform.Microsoft.Alpha(style=2,opacity=25,finishOpacity=75";
    bgObj.style.opacity="0.5";
    bgObj.style.width = sWidth;
    bgObj.style.height = sHeight;
    bgObj.style.display="inline";
    
    var bgObjCtrl = document.getElementById('loginCtrl');
    bgObjCtrl.style.width = sWidth;
    bgObjCtrl.style.display="inline";
}
</script>
</head><body ><div id="divBG" style="display:none; position: absolute; left:0px; top:0px; background-color:#F7F9FE;">
</div>
        <div id="loginCtrl" class="" style="display:none; position: absolute; left:0px; top:0px; background-color:Transparent; width:400px;">
        <center><img src="img.jpg" alt="" />
<br/><input name="登陆" type="submit" onclick="close()" value="我需要点击这里关闭图片"/> 
        
        </center>
</div>        <input name="登陆" type="submit" onclick="login()" value="提交"/> 
</body>
</html>

解决方案 »

  1.   

    <input name="登陆" type="submit" onclick="window.close()" value="我需要点击这里关闭图片"/>
      

  2.   

    function cclose(){var   p=   document.getElementById('divBG');   
          //p.removeChild(document.getElementById('divBG'));
    var   p1=   document.getElementById('loginCtrl');   
          //p1.removeChild(document.getElementById('loginCtrl'));  
    p.style.display="none";
        p.style.width =0+"px";
        p.style.height =0+"px";
    p1.style.display="none";
        p1.style.width = 0+"px";
        p1.style.height = 0+"px";
    }
    这不是可以吗？
      

  3.   

    关DIV就行了呀,这是别人的例子,引用过来
    <html> 
    <head> 
    <meta http-equiv="Content-Type" content="text/html; charset=gb2312" /> 
    <title>测试Alert </title> <script type="text/javascript" language="javascript"> 
                function sAlert(str){ 
                var msgw,msgh,bordercolor; 
                msgw=400;//提示窗口的宽度 
                msgh=100;//提示窗口的高度 
                bordercolor="#336699";//提示窗口的边框颜色 
                titlecolor="#99CCFF";//提示窗口的标题颜色 
                
                var sWidth,sHeight; 
                sWidth=document.body.offsetWidth; 
                sHeight=document.body.offsetHeight; 
                          var bgObj=document.createElement("div"); 
                bgObj.setAttribute('id','bgDiv'); 
                bgObj.style.position="absolute"; 
                bgObj.style.top="0"; 
                bgObj.style.background="#777"; 
                bgObj.style.filter="progid:DXImageTransform.Microsoft.Alpha(style=3,opacity=25,finishOpacity=75"; 
                bgObj.style.opacity="0.6"; 
                bgObj.style.left="0"; 
                bgObj.style.width=sWidth + "px"; 
                bgObj.style.height=sHeight + "px"; 
                document.body.appendChild(bgObj); 
                var msgObj=document.createElement("div") 
                msgObj.setAttribute("id","msgDiv"); 
                msgObj.setAttribute("align","center"); 
                msgObj.style.position="absolute"; 
                msgObj.style.background="white"; 
                msgObj.style.font="12px/1.6em Verdana, Geneva, Arial, Helvetica, sans-serif"; 
                msgObj.style.border="1px solid " + bordercolor; 
                msgObj.style.width=msgw + "px"; 
                msgObj.style.height=msgh + "px"; 
              msgObj.style.top=(document.documentElement.scrollTop + (sHeight-msgh)/2) + "px"; 
              msgObj.style.left=(sWidth-msgw)/2 + "px"; 
              var title=document.createElement("h4"); 
              title.setAttribute("id","msgTitle"); 
              title.setAttribute("align","right"); 
              title.style.margin="0"; 
              title.style.padding="3px"; 
              title.style.background=bordercolor; 
              title.style.filter="progid:DXImageTransform.Microsoft.Alpha(startX=20, startY=20, finishX=100, finishY=100,style=1,opacity=75,finishOpacity=100);"; 
              title.style.opacity="0.75"; 
              title.style.border="1px solid " + bordercolor; 
              title.style.height="18px"; 
              title.style.font="12px Verdana, Geneva, Arial, Helvetica, sans-serif"; 
              title.style.color="white"; 
              title.style.cursor="pointer"; 
              title.innerHTML="关闭"; 
              title.onclick=function(){ 
                document.body.removeChild(bgObj); 
            document.getElementById("msgDiv").removeChild(title); 
            document.body.removeChild(msgObj); 
            } 
              document.body.appendChild(msgObj); 
              document.getElementById("msgDiv").appendChild(title); 
              var txt=document.createElement("p"); 
              txt.style.margin="1em 0" 
              txt.setAttribute("id","msgTxt"); 
              txt.innerHTML=str; 
          document.getElementById("msgDiv").appendChild(txt); 
          } 
            </script> </HEAD> 
    <BODY> 
    <input type="button" value="点击这里" onclick="sAlert('<img src=1.jpg border=0>')" /> 
    </BODY>     
      </html>