var browserName = ""; 
		
		var ua = navigator.userAgent.toLowerCase(); 
		if ( ua.indexOf( "opera" ) != -1 ) 
		{ 
		browserName = "opera"; 
		} 
		else if ( ua.indexOf( "msie" ) != -1 ) 
		{ 
		browserName = "msie"; 
		} 
		else if ( ua.indexOf( "safari" ) != -1 ) 
		{ 
		browserName = "safari"; 
		} 
		else if ( ua.indexOf( "mozilla" ) != -1 ) 
		{ 
			if ( ua.indexOf( "firefox" ) != -1 ) 
			{ 
			browserName = "firefox"; 
			} 
		else 
		{ 
		browserName = "mozilla"; 
		} 
		} 
		
		if(browserName == "safari")
		{
		document.getElementById('1a').style.display = "none";
		document.getElementById('1b').style.display = "none";
		document.getElementById('2a').style.display = "none";
		document.getElementById('2b').style.display = "none";
		document.getElementById('3a').style.display = "none";
		document.getElementById('3b').style.display = "none";
		
		}