var _isDOM = (document.getElementById ? true : false); 
var _isIE4 = ((document.all && !_isDOM) ? true : false);
var _isNS4 = (document.layers ? true : false);

function getNewRef(id) {
	if (_isDOM) return document.getElementById(id);
	if (_isIE4) return document.all[id];
	if (_isNS4) return document.layers[id];
}

var _isNS = navigator.appName == "Netscape";

function moveRightTopButton() {
	var yMenuFrom, yMenuTo, yOffset, timeoutNextCheck;
	if (_isNS4) {
		yMenuFrom   = divMenu.top;
		yMenuTo     = windows.pageYOffset+100;
	} else if (_isDOM) {
		yMenuFrom   = parseInt (divMenu.style.top, 10);
		yMenuTo     = (_isNS ? window.pageYOffset : document.body.scrollTop)+400;
	}

	if( yMenuTo < 400 ) yMenuTo = 400;

	timeoutNextCheck = 100;

	if (yMenuFrom != yMenuTo) {
		yOffset = Math.ceil(Math.abs(yMenuTo - yMenuFrom) / 10);
		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 ("moveRightTopButton()", timeoutNextCheck);
}


_site_posi="<div id='top_button' style='position:absolute;z-index:1; left: 960px;'>\
			<table border='0' cellpadding=0 cellspacing=0>\
			<tr>\
			<td><a \
				href='#upper' \
				onmouseover='javascript:trans(2);' onmouseout='javascript:trans(1);'><img \
				src='/img/icn-up-0.gif' NAME=feedback border=0></A>\
			</tr>\
			</table>\
            </div>";

document.write(_site_posi);

if (_isNS4) {
	var divMenu = document["top_button"];
	divMenu.top = top.pageYOffset + 50;
	divMenu.visibility = "visible";
	moveRightTopButton();
} else if (_isDOM) {
	var divMenu = getNewRef('top_button');
	divMenu.style.top = (_isNS ? window.pageYOffset : document.body.scrollTop) + 50;
	divMenu.style.visibility = "visible";
	moveRightTopButton();
}

transimg1=new Image();	transimg1.src="/img/icn-up-0.gif";
transimg2=new Image();	transimg2.src="/img/icn-up-1.gif";

function trans(nom) {	
	if (nom==1) document.images["feedback"].src = transimg1.src;
	if (nom==2) document.images["feedback"].src = transimg2.src;	
}