var i = 0 ;
var bNetscape4plus = (navigator.appName == "Netscape" && navigator.appVersion.substring(0,1) >= "4");
var bExplorer4plus = (navigator.appName == "Microsoft Internet Explorer" && navigator.appVersion.substring(0,1) >= "4");
function CheckUIElements(){
     var yMenuFrom, yMenuTo, yButtonFrom, yButtonTo, yOffset, timeoutNextCheck;
     if ( bNetscape4plus ) { 
             yMenuFrom   = parseInt(document.getElementById("divMenu").style.top);
             yMenuTo     = top.pageYOffset + 300; //高度
     }
     else if ( bExplorer4plus ) {
             yMenuFrom   = parseInt (document.getElementById("divMenu").style.top, 10);
             yMenuTo     = document.documentElement.scrollTop + 300; //高度
			 
     }
     timeoutNextCheck = 100;  //檢查時間
 

     if ( yMenuFrom != yMenuTo ) {
             yOffset = Math.ceil( Math.abs( yMenuTo - yMenuFrom ) / 20 );
             if ( yMenuTo < yMenuFrom )
                     yOffset = -yOffset;
             if ( bNetscape4plus )
                     document.getElementById("divMenu").style.top = parseInt(document.getElementById("divMenu").style.top)+ yOffset +"px";
             else if ( bExplorer4plus )
                     document.getElementById("divMenu").style.top = parseInt (document.getElementById("divMenu").style.top, 10) + yOffset;
             timeoutNextCheck = 10;
     }	 
     setTimeout ("CheckUIElements()", timeoutNextCheck);
}
function OnLoad()
{
     var y;
     if ( top.frames.length )
     if ( bNetscape4plus ) {
             document.getElementById("divMenu").style.top =  parseInt(top.pageYOffset) + 350; //高度
             document.getElementById("divMenu").style.visibility = "visible";
     }
     else if ( bExplorer4plus ) {
             document.getElementById("divMenu").style.top = document.documentElement.scrollTop + 350; //高度
             document.getElementById("divMenu").style.visibility = "visible";
     }
     CheckUIElements();
     return true;
}
OnLoad();