var sitemapWin;

function badSitemap()
{
	if(sitemapWin)
	{
		sitemapWin.close();
	}
}

function sitemap()
{	
	badSitemap();
	
	var width = 250;
	var height = 450;
	// calculate center
	var left = screen.availWidth/2 - width/2;
	var top = screen.availHeight/2 - height/2;
	
	var url = "../sitemap.htm";
	if (arguments.length > 0) url = arguments[0];
	
	sitemapWin = open(url, null, 'toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=no,resizable=no,copyhistory=yes,width=' + width + ',height=' + height + ',left='+left+', top='+top+',screenX='+left+',screenY='+top+'');
}