function jkSWAP (lpszID, lpszIMG) {
	if (document.images[lpszID]) {
		document.images[lpszID].src	= lpszIMG;
	}
}

function jkPRELOAD (lpszDUMMY) {
	for (var x = 0; x < jkPRELOAD.arguments.length; x++) {
		var pri	= new Image();
		pri.src	= jkPRELOAD.arguments[x];
	}
}

function centeredpopup (f, w, h, n) {
	l	= (screen.width - w) / 2;
	t	= (screen.height - h) / 2;
	p	= "dependant=yes,scrollbars=no,width=" + w + ",height=" + h + ",top=" + t + ",left=" + l;
	if (n == '') {
		n	= '_blank';
	}
	window.open(f, n, p);
}