// some common javascript methods

	function popUp(URL) {
	win = window.open(URL, 'map', 'toolbar=0,scrollbars=0,location=0,statusbar=0,menubar=0,resizable=0,width=625,height=615,left=351,top=222.5');
	if (parseInt(navigator.appVersion) >= 4) { win.window.focus(); }
	}

function Left(str, n){
	if (n <= 0)
	    return "";
	else if (n > String(str).length)
	    return str;
	else
	    return String(str).substring(0,n);
}
function Right(str, n){
    if (n <= 0)
       return "";
    else if (n > String(str).length)
       return str;
    else {
       var iLen = String(str).length;
       return String(str).substring(iLen, iLen - n);
    }
}