function detectSafari()
{
		//alert(navigator.appVersion);
        if (navigator.appVersion.indexOf("Mac") != -1){
                if (!window.getComputedStyle) document.body.className += " mac";
                else document.body.className += " mac";
        }
}
if (window.addEventListener)
{
        window.addEventListener("load", detectSafari, false);
}