// Wrap it:
var lastMenu = 0;
var numLinks = 7;
var lastH = 0;
var lastW = 0;
var contentH = 684;
var contentW = 1024;

function checkBrowserUser() {
    for (var i = 0; i < numLinks; i++)
		{
    	var wndo = new dw_scrollObj('wn'+i, 'pan'+i, null);
  		if (useScrollbars) wndo.setUpScrollbar('dragBar'+i, 'track'+i, "v", 1, 1);
			maxY = eval("dw_scrollObjs.wn" + i + ".maxY");
			if (maxY == 0)
			{
				var arrow = getIDRef('up'+i);
				arrow.style.visibility = 'hidden';
				var arrow = getIDRef('down'+i);
				arrow.style.visibility = 'hidden';
				if (useScrollbars)
				{
					var track = getIDRef('dragBar'+i);
					track.style.visibility = 'hidden';
				}
			}
		}
		checkBrowser();
		window.setInterval('centerBackground()',20);
}

function goMenuUser(link) {
    goMenu(link);
		if (lastMenu != 0) {
		  dw_scrollObj.scrollTo(lastMenu,0,0,1);
			lastMenu = getIDRef(lastMenu+"m");
			lastMenu.style.visibility = 'visible';
		}
		var goNowMenu = getIDRef(link+"m");
		goNowMenu.style.visibility = 'hidden';
		lastMenu = link;		
}

function scrollPanel(panNr, upDown)
{
	scrollWidth = 500*upDown;
	dw_scrollObj.scrollBy(panNr,0,scrollWidth);
}

function centerBackground()
{
    winH = 0;
    winW = 0;
    if( typeof( window.innerWidth ) == 'number' )
        { winH = window.innerHeight; winW = window.innerWidth; } 
    else {
        if( document.documentElement && ( document.documentElement.clientWidth || document.documentElement.clientHeight ) )
            { winH = document.documentElement.clientHeight; winW = document.documentElement.clientWidth; }
        else {
            if( document.body && ( document.body.clientWidth || document.body.clientHeight ) )
                { winH = document.body.clientHeight; winW = document.body.clientWidth; } } }
    if (winH != lastH)
    {
    	lastH = winH;
    	marginTop = (winH - contentH)/2;
    	var panel = getIDRef('background');
    	if (marginTop > 0) panel.style.top = marginTop + 'px';
    		else panel.style.top = '0px';
    }
    if (winW != lastW)
    {
    	lastW = winW;
    	marginLeft = (winW - contentW)/2;
    	var panel = getIDRef('background');
    	if (marginLeft > 0) panel.style.left = marginLeft + 'px';
    		else panel.style.left = '0px';
    }
}