safari=(navigator.userAgent.indexOf('Safari')!=-1);
function showPic (whichpic) {
if (document.getElementById) {
	if (safari) document.getElementById('focus_block').src = "images/blank.gif";
	document.getElementById('focus_block').src = whichpic;			
		return false;
	} 
	else {
		return true;
	}
}