解决上左右页面框架中iframe的引起的滚动条问题

js代码：

function  setIframeHeight() {
     var  dHeight  =   502 ;  // 基础高度
     var  main  =  document.getElementById( " mainIframe " );
     var  left  =  document.getElementById( " leftIframe " );
     // var leftFrame = document.getElementsByName("left")[0];
     var  cHeight  =  main.contentWindow.document.body.scrollHeight;  // 当前高度
     var  sHeight  =   0 ;  // 准备设置的高度值
     if  (cHeight  <=  dHeight) {
        sHeight  =  dHeight  +   " px " ;
    }  else  {
        sHeight  =  cHeight  +   " px " ;
    }
    main.style.height  =  sHeight;
    left.style.height  =  sHeight;
     if  (left.contentWindow.document.getElementById( " leftFrameCont " )) {
        left.contentWindow.document.getElementById( " leftFrameCont " ).style.height  =  sHeight;
    }
}

index.jsp部分页面代码：

< div id = " content_bottom2 "  style = " width:auto; " >
     < iframe name = " left "   class = " vipIf_left "  scrolling = " no "  marginwidth = " 0px "  frameborder = " 0 "  src = " left.jsp "  id = " leftIframe " ></ iframe >
     < iframe name = " main "   class = " vipIf_right "  frameborder = " 0 "  src = " main.jsp "  onload = " setIframeHeight(); "  id = " mainIframe " ></ iframe >
</ div >

left.jsp部分页面代码：

< body >
     < div  class = " cont_left "  id = " leftFrameCont " >
        
     </ div >
</ body >