关于一个层怎么现实在另外一个层上面

[a8509190]

图片不知道能不能看到 我在做一个QQ注册页面 打开腾讯的QQ注册页面 点击年这个文本款 会出现一个层有很多年份给你选择，但是我点击出来的这个层会被下面的文本框挡住，如何向腾讯一样不被挡住，我试了z-index不行，而且腾讯貌似也没用这个！求解！最好能加我QQ帮解答下80286048

[naonaoye]

写在那个层里面

[大渣吼吾系渣渣辉]

显现弹出一层窗体：如下

// JScript 文件
function ShowDialog(nWidth, nHeight, strUrl, strTitleName)
{
    var mydiv=document.getElementById("fcolor");
    var nHeight=nHeight;
    var scolor=getCurrentStyle(mydiv, "backgroundColor", "background-color");
    /*ie6*/
	if(scolor=="#0000ff")
	{
        nHeight=nHeight-10;
	}/*ie7*/
	else if(scolor=="#ff0000")
	{
	    nHeight=nHeight+10;
	    document.getElementById("iframeDialog").style.height = nHeight-21+"px";
	}/*firefox*/
	else if(scolor=="rgb(0, 255, 0)")
	{
	    nHeight=nHeight+10;
	    document.getElementById("iframeDialog").style.height = nHeight-21+"px";
	}
	else
	{
	    nHeight=nHeight+10;
	    document.getElementById("iframeDialog").style.height = nHeight-21+"px";
	}
	
	document.getElementById("divDialog").style.display = "block";
	document.getElementById("divDialog").style.visibility = "visible";
	document.getElementById("divDialog").style.top = (window.screen.height/2-nHeight/2)/2-23+"px";
	document.getElementById("divDialog").style.left = (window.screen.width/2-nWidth/2)+"px";
	document.getElementById("divDialog").style.width = nWidth+"px";
	document.getElementById("divDialog").style.height = nHeight+"px";
	var fid=document.getElementById("hfActiveWin").value;
	var num=Math.round(Math.random()*10000);
	if(strUrl.indexOf('?')!=-1){strUrl+="&a="+num+"&fid="+fid}else{strUrl+="?a="+num+"&fid="+fid;}
	document.getElementById("iframeDialog").src = strUrl;
	document.getElementById("divTitleName").innerHTML = strTitleName;
	document.getElementById("divTitleName").style.width = nWidth-50+"px";
	
	document.getElementById("divBackground").style.width = "100%";
	document.getElementById("divBackground").style.height = "100%";
	document.getElementById("divBackground").style.display = "block";
	document.getElementById("divBackground").style.visibility = "visible";
	document.getElementById("divBackground").style.top = "0px";
	document.getElementById("divBackground").style.left = "0px";
	
	Sethidden1();
}

其次，窗体上弹出窗体：如下
[code=JScript]
function ShowDialog1(nWidth, nHeight, strUrl, strTitleName)
{
    var mydiv=document.getElementById("fcolor");
    var nHeight=nHeight;
    var scolor=getCurrentStyle(mydiv, "backgroundColor", "background-color");
    /*ie6*/
	if(scolor=="#0000ff")
	{
        nHeight=nHeight-10;
	}/*ie7*/
	else if(scolor=="#ff0000")
	{
	    nHeight=nHeight+10;
	    document.getElementById("iframeDialog1").style.height = nHeight-21+"px";
	}/*firefox*/
	else if(scolor=="rgb(0, 255, 0)")
	{
	    nHeight=nHeight+10;
	    document.getElementById("iframeDialog1").style.height = nHeight-21+"px";
	}else
	{
		nHeight=nHeight+10;
	    document.getElementById("iframeDialog1").style.height = nHeight-21+"px";
	}
	document.getElementById("divDialog1").style.display = "block";
	document.getElementById("divDialog1").style.visibility = "visible";
	document.getElementById("divDialog1").style.top = (window.screen.height/2-nHeight/2)/2-23+"px";
	document.getElementById("divDialog1").style.left = (window.screen.width/2-nWidth/2)+"px";
	document.getElementById("divDialog1").style.width = nWidth+"px";
	document.getElementById("divDialog1").style.height = nHeight+"px";
	var num=Math.round(Math.random()*10000);
	if(strUrl.indexOf('?')!=-1){strUrl+="&a="+num}else{strUrl+="?a="+num;}
	document.getElementById("iframeDialog1").src="about:blank";
	document.getElementById("iframeDialog1").src = strUrl;
	document.getElementById("divTitleName1").innerHTML = strTitleName;
	document.getElementById("divTitleName1").style.width = nWidth-50+"px";
			
	document.getElementById("divBackground1").style.width = "100%";
	document.getElementById("divBackground1").style.height = "100%";
	document.getElementById("divBackground1").style.display = "block";
	document.getElementById("divBackground1").style.visibility = "visible";
	document.getElementById("divBackground1").style.top = "0px";
	document.getElementById("divBackground1").style.left = "0px";
}

[/code]

[devmiao]

图片看不到哦

看看这里 http://w3help.org/zh-cn/kb/013/ 希望能帮助到你啊，喵~