var isDOM = (document.getElementById ? true : false); 
var isIE4 = ((document.all && !isDOM) ? true : false);
var isNS4 = (document.layers ? true : false);
var isNS = navigator.appName == "Netscape";

function getRef(id)
{
	if (isDOM) return document.getElementById(id);
	if (isIE4) return document.all[id];
	if (isNS4) return document.layers[id];
}

function getSty(id)
{
	return (isNS4 ? getRef(id) : getRef(id).style);
}

function moveRightEdge()
{
	var yMenuFrom, yMenuTo, yOffset, timeoutNextCheck;

	if (isNS4)
	{
		yMenuFrom   = divMenu.top;
		yMenuTo     = windows.pageYOffset + 280;   
	}
	else if (isDOM)
	{
		yMenuFrom   = parseInt (divMenu.style.top, 10);
		yMenuTo     = (isNS ? window.pageYOffset : document.body.scrollTop) + 280; 
	}
	timeoutNextCheck = 500;

	if (yMenuFrom != yMenuTo)
	{
		yOffset = Math.ceil(Math.abs(yMenuTo - yMenuFrom) / 20);
		if (yMenuTo < yMenuFrom)
			yOffset = -yOffset;
		if (isNS4)
			divMenu.top += yOffset;
		else if (isDOM)
			divMenu.style.top = parseInt (divMenu.style.top, 10) + yOffset;
			timeoutNextCheck = 10;
	}
	setTimeout ("moveRightEdge()", timeoutNextCheck);
}

function Resize_Frame(name)
{
	var Frame_Body = document.frames(name).document.body;
	var Frame_name = document.all(name);
	
	Frame_name.style.width = Frame_Body.scrollWidth + (Frame_Body.offsetWidth-Frame_Body.clientWidth);
	Frame_name.style.height = Frame_Body.scrollHeight + (Frame_Body.offsetHeight-Frame_Body.clientHeight);
	
	if (Frame_name.style.height == "0px" || Frame_name.style.width == "0px")
	{
		Frame_name.style.width = "626px"; 
		Frame_name.style.height = "300px"; 
		window.status = "iframe resizing fail.";
	}
	else
	{
		window.status = "";
	}

}

function changeBtn(img,obj)
{
	obj.src=img;
}