function randomWall() {
    if (navigator.appVersion > '5' || (navigator.appName == 'Microsoft Internet Explorer' && navigator.appVersion > '4')) {
        var max = 6;
        wall = Math.floor(Math.random() * max) + 1;
        if (wall == 1) { document.body.background = 'back.jpg' }
        else
        if (wall == 2) { document.body.background = 'back02.jpg' }
        else
        if (wall == 3) { document.body.background = 'back03.jpg' }
        else
        if (wall == 4) { document.body.background = 'back04.jpg' }
        else
        if (wall == 5) { document.body.background = 'back05.jpg' }
        else
        if (wall == 6) { document.body.background = 'back06.jpg' }
    }
}

function MM_openBrWindow(theURL,winName,features) { //v2.0
  window.open(theURL,winName,features);
}

var prevObj = null
function swDisp(elem)	{
	if(elem.style.display == "block")	{
		elem.style.display = "none"
	} else	{
		elem.style.display = "block"
	}
	if(prevObj != null)	{
		if(prevObj != elem)	{
			prevObj.style.display = "none"
		}
	}
	prevObj = elem
}