var wndInfoTip;

/**
 * closeInfoTip()
 *
 * Closes info tip popup window
 */
function closeInfoTip() {

	if( wndInfoTip && wndInfoTip.close ) {
		wndInfoTip.close();
	}

}

/**
 * openInfoTip( string sUrl, string sTipText )
 *
 * Opens info tip popup window 
 * and shows sTipText in it. sUrl is InfoTip URL
 */
function openInfoTip( sUrl, sTipText ) {

	var iTipHeight = 148;
	var iTipWidth = 200;
	var iTipLeft = eval( screen.availWidth - 250 );
	var iTipTop = eval( screen.availHeight - 230 );
	var sTipScrollbars = "yes";

	closeInfoTip();

	window.sTipText = sTipText;

	var sParams = "width=" + iTipWidth + ",height=" + iTipHeight + ",toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=" + sTipScrollbars + ",resizable=no,left=" + iTipLeft + ",top=" + iTipTop;

	wndInfoTip = window.open( sUrl, 'wndInfoTip', sParams );

}