一个JS对话框,可以显示其它页面,

还不能自适应大小

garyBox.js

// JavaScript Document
// gary 2014-3-27
// 加了 px 在google浏览器没加这个发现设置width 和height没有用 
//gary 2014-3-27
//实在不会用那些JS框架，自己弄个，我只是想要个可以加载其它页面的对话框而以,这里用了别人的代码，不过不记得来源了
//关闭那两个字可能乱码，自己另存下，这个是utf8没问题
//调用
///
//<a href="#" onclick="showGaryBox('弹窗','http://www.baidu.com',function(){alert('窗口关闭！')})">弹窗</a> 
///

var garyBox ;
var garyBoxHead;
var garyBoxTitleText;
var garyBoxClose;
var garyBoxIframe;

function createGaryBox()
{
document.body.innerHTML+="<div id=\"garyBox\" style=\"display:none\"><div id=\"garyBoxHead\"><h4 ><span id=\"garyBoxTitleText\">title</span></h4><h4><span id=\"garyBoxClose\">关闭</span></h4></div><div><iframe id=\"garyBoxIframe\" name=\"garyBoxIframe\"  width=\"100%\" height=\"100%\" frameBorder=\"0\" frameSpacing=\"0\" scrolling=\"auto\" marginHeight=\"0\" marginWidth=\"0\" ></iframe></div></div>";
    garyBox = document.getElementById("garyBox");
    garyBox.style.cssText="border:1px solid #369;width:400px;height:250px;background:#e2ecf5;z-index:1000;position:absolute;display:none;"; 

    garyBoxHead=document.getElementById("garyBoxHead"); 
    garyBoxHead.style.cssText="height:20px;background:#369;color:#fff;padding:5px 0 0 5px;";
    
    garyBoxTitleText=document.getElementById("garyBoxTitleText"); 
    garyBoxTitleText.style.cssText="float:left;";
    
    garyBoxClose = document.getElementById("garyBoxClose"); 
    garyBoxClose.style.cssText="cursor:pointer;float:right; margin-right:10px;";        
    
    garyBoxIframe=document.getElementById("garyBoxIframe");     
}    
function showGaryBox(title,url,onClose,width,height)
{
      if(!garyBox)createGaryBox();
      if(!arguments[3]) width = 600;
      if(!arguments[4]) height = 300;
     
    garyBoxTitleText.innerHTML=title;
    <!--设置遮敝-->    
    garyBox.style.display = "block"; 
    garyBox.style.position = "absolute"; 
    garyBox.style.top = "50%"; 
    garyBox.style.left = "50%"; 
    garyBox.style.marginTop = (-height/2)+"px"; 
    garyBox.style.marginLeft = (-width/2)+"px";
    
    garyBox.style.width=width+'px';
    garyBox.style.height=height+'px'; 
    
    garyBoxIframe.style.width=garyBox.style.width;
    garyBoxIframe.style.height=garyBox.style.height;
 
    
    var garyBoxBg = document.createElement("div"); 
    garyBoxBg.setAttribute("id","garyBoxBg"); 
    garyBoxBg.style.background = "#000"; 
    garyBoxBg.style.width = "100%"; 
    garyBoxBg.style.height = "100%"; 
    garyBoxBg.style.position = "absolute"; 
    garyBoxBg.style.top = "0"; 
    garyBoxBg.style.left = "0"; 
    garyBoxBg.style.zIndex = "500"; 
    garyBoxBg.style.opacity = "0.3"; 
    garyBoxBg.style.filter = "Alpha(opacity=30)"; 
    document.body.appendChild(garyBoxBg);
    document.body.style.overflow = "hidden"; 
    
    garyBoxClose.onclick = function() 
    { 
        garyBox.style.display = "none"; 
        garyBoxBg.style.display = "none";     
        if(onClose)
        {
            onClose();
        }    
    }    
    garyBoxIframe.style.margin=0;
    garyBoxIframe.style.padding=0;
    garyBoxIframe.src=url;
    garyBoxIframe.onload=function(){
        
    }
}