function detectSafari(){ 
if (navigator.appVersion.indexOf("Safari") != -1) 
   document.body.className += " safari"; 
} 
function keypressNumbers(evt){		if(event)evt = event;		return (event.keyCode >= 48 && event.keyCode<=57);}
if (window.addEventListener) 
   window.addEventListener("load", detectSafari, false);