<!--

var Xpos = 0;
var Ypos = 0;
var Ygravity = 0.9;
var scrollPos = 0;
var oldScrollPos = 0;

function FloatMenu() { 
docWidth = 600; // update document width
docHeight = document.body.clientHeight; // update document height
oldScrollPos = scrollPos;
scrollPos = document.body.scrollTop; // update scrollbar position
//if(scrollPos > 600) scrollPos = 580;

Xpos = docWidth; 
Yboundary = scrollPos + 95;

if (floater.offsetTop < Yboundary - 10) // Object is behind boundary
Ypos += 2;

if (floater.offsetTop > Yboundary + 10) // Object is past boundary
Ypos -= 3;

Ypos *= Ygravity; // Slow object down

floater.style.pixelLeft = Xpos - 500;
floater.style.pixelTop += Ypos; // Make object bounce
}

window.setInterval("FloatMenu()", 30); 

//控制元素的顯示和隱藏
function SetElementVisible(id,n)
{		
	var obj = document.getElementById(id);
	if(n==1)
	{
		obj.style.display = "block";
	}
	else
	{
		obj.style.display = "none";
	}
}
//-->