var b_timer = null; // blink timer 
	var b_on = true; // blink state 
	var blnkrs = null; // array of spans 
	
	function blink() { 
		var tmp = document.getElementsByTagName("span"); 
		if (tmp) { 
		blnkrs = new Array(); 
		var b_count = 0; 
		for (var i = 0; i < tmp.length; ++i) 
		{ 
			if (tmp[i].className == "blink")
			{ 
			blnkrs[b_count] = tmp[i]; 
			++b_count; 
			} 
		} 
	// time in m.secs between blinks 
	// 500 = 1/2 second 
		blinkTimer(500); 
		} 
	} 
	
	function blinkTimer(ival) { 
		if (b_timer) 
		{ 
			window.clearTimeout(b_timer); 
			b_timer = null; 
		} 
	blinkIt(); 
	b_timer = window.setTimeout('blinkTimer(' + ival + ')', ival); 
	} 
	
	function blinkIt() { 
		for (var i = 0; i < blnkrs.length; ++i)
		{ 
			if (b_on == true) { 
			blnkrs[i].style.visibility = "hidden"; 
			} 
			else 
			{ 
			blnkrs[i].style.visibility = "visible"; 
			} 
		} 
		b_on =!b_on; 
	}