function popupWindow( pageURL, windowName, w, h, features )
{
	var winl = (screen.width - w) / 2;
	var wint = (screen.height - h) / 2;
	winprops = 'width='+w+',height='+h+',top='+wint+',left='+winl+','+features

	var popupWindow = window.open( pageURL ,windowName,winprops);

	popupWindow.focus();
}

function changeClass( element, newclass )
{
	element.className = newclass;
}

function openPrintPage()
{
	url = document.location.href;
	popupWindow('/en/phprint.php?page='+url, 'print', 780, 500, 'scrollbars=yes,toolbar=yes');
}