function blink(color1,color2)
{
	var blink = document.all.tags("blink");
	
	for (var i=0; i<blink.length; i++)
		blink[i].style.color = blink[i].style.color==color1?color2:color1;
}

function preBlink(color1,color2,intervale/*en ms*/)
{
	if (document.all)
		setInterval("blink('"+color1+"','"+color2+"')",intervale)
}