function OpenBigWindow(sWidth,sHeight,url,scrollbars) {
	if (!sWidth) sWidth = 450;
	if (!sHeight) sHeight = 450;
	if (!url) url = 'ecard.htm';
	if (!scrollbars) scrollbars = "no";
	
	x = screen.width/2 - (sWidth/2);
	y = screen.height/2 - (sHeight/2);
		
	window.open(url, 'ecard', 'top=' + y + ', left=' + x + ', width=' + sWidth + ',height=' + sHeight + ',scrollbars=' + scrollbars);
}

// popup window function
function openWin(url, w, h) {
	var winX = (screen.availWidth - w) * 50 * 0.01;
	var winY = (screen.availHeight - h) * 50 * 0.01;
	popupWin = window.open(url, '','width=' + w + ',height=' + h + ',left=' + winX + ',top=' + winY + ',scrollbars=no,resizable=yes,status=yes');
	setTimeout('popupWin.focus();',300);
}