iframe 自适应高度

[color=red][b]方法一[/b][/color] [size=large]在父页面写入js方法setHeight,iframe加载子页面时，子页面加载父页面方法setHeight.[color=red]self.parent.setHeight();[/color][/size]
]


function setHeight(){
   var mainObj = document.getElementById("main");
   var d_height=mainObj.contentDocument.body.clientHeight;
   if(d_height<230){
  d_height=230;
   }
   mainObj.height=d_height+"px";
}

[color=red][b]方法二[/b][/color] [size=large] 父页面写入js方法SetCwinHeight,在iframe中使用onload属性加载方法SetCwinHeight. （[color=red]οnlοad="SetCwinHeight(this)"[/color]）[/size]。


function SetCwinHeight(obj)
{
  var cwin=obj;
  if (document.getElementById)
  {
 if (cwin && !window.opera)
 {
 if (cwin.contentDocument && cwin.contentDocument.body.offsetHeight)
 cwin.height = cwin.contentDocument.body.offsetHeight + 20; //FF NS
 else if(cwin.Document && cwin.Document.body.scrollHeight)
 cwin.height = cwin.Document.body.scrollHeight + 10;//IE
 }
 else
 {
 if(cwin.contentWindow.document && cwin.contentWindow.document.body.scrollHeight)
 cwin.height = cwin.contentWindow.document.body.scrollHeight;//Opera
 }
  }

}