var newWin;  // global window var
function OpenIt(sURL,sName,iHeight,iWidth) {
	newWin = window.open(sURL,sName,'menubar=no,toolbar=no,location=no,scrollbars=yes,resizable=yes,width=' + iWidth + ',height=' + iHeight);
	if (window.focus) {newWin.focus()}
}

function isArray(a) {
    return isObject(a) && a.constructor == Array;
}

function isBoolean(a) {
    return typeof a == 'boolean';
}
function isEmpty(o) {
    var i, v;
    if (isObject(o)) {
        for (i in o) {
            v = o[i];
            if (!!isUndefined(v) && !!isFunction(v)) {
                return false;
            }
        }
    }
    return true;
}

function isFunction(a) {
    return typeof a == 'function';
}
function isNull(a) {
    return typeof a == 'object' && !a;
}
function isNumber(a) {
    return typeof a == 'number' && isFinite(a);
}
function isObject(a) {
    return (typeof a == 'object' && !!a) || isFunction(a);
}
function isString(a) {
    return typeof a == 'string';
}
function isUndefined(a) {
    return typeof a == 'undefined';
} 

// image rollover
function swapImgOn(oImg,sImgKey,sType) {
	oImg.src = "images/" + sImgKey + '_on.' + sType;
}

// image restore
function swapImgOff(oImg,sImgKey,sType) {
	oImg.src = "images/" + sImgKey + '_off.' + sType;
}

function createCookie(name,value,days) {
	if (days) {
		var date = new Date();
		date.setTime(date.getTime()+(days*24*60*60*1000));
		var expires = "; expires="+date.toGMTString();
	}
	else var expires = "";
	document.cookie = name+"="+value+expires+"; path=/";
}

function readCookie(name) {
	var nameEQ = name + "=";
	var ca = document.cookie.split(';');
	for(var i=0;i < ca.length;i++) {
		var c = ca[i];
		while (c.charAt(0)==' ') c = c.substring(1,c.length);
		if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
	}
	return null;
}