js判断页面是不是加载完毕

js判断页面是否加载完毕
用 document.readyState == "complete" 判断页面是否加载完成。 

var leftDocument=window.parent.frames("leftFrame").document;if(leftDocument.readyState == 'loaded' || leftDocument.readyState == 'complete') {leftDocument.getElementById("notes").style.display = 'block';leftDocument.getElementById("others").style.display = 'none'; }  
<script language="javascript">     if (document.readyState=="complete")   {           AdjustImageSize();   }   else  {           document.onreadystatechange = function()           {                                 if (document.readyState == "complete")                   {                           AdjustImageSize();                   }           }   }     function AdjustImageSize()   {           var imageWidth = document.all["SendPic"].width;           var imageHeight = document.all["SendPic"].height;                      if (imageWidth == 0 && imageHeight == 0)           {                   document.write ("图片下载失败，请刷新！");                   return;           }                      if (imageWidth > 160 || imageHeight > 160)           {                   if (imageWidth > imageHeight)                   {                           k = 160 / imageWidth;                           imageHeight = imageHeight * k;                           imageWidth = 160;                   }                   else                  {                           k = 160 / imageHeight;                           imageWidth = imageWidth * k;                           imageHeight = 160;                   }                                      document.all["ImgResized"].value = "1";           }                      document.all["SendPic"].width = imageWidth;           document.all["SendPic"].height = imageHeight;                      document.all["ImgWidth"].value = imageWidth;           document.all["ImgHeight"].value = imageHeight;   }   </script>