function flash(a,color1,color2){
    if( a.style.color == color1) {
	a.style.color = color2;
    }
    else {
        a.style.color = color1;
    }
}

function blink()
{
    color1="#ff0000";
    color2="#00cc33";
    if(document.all && document.all.blink)
    {
	if(document.all.blink.length)
	    for(i=0; i<document.all.blink.length; i++){
		a = document.all.blink[i];
		flash(a,color1,color2);
	    }
	else
	{
		a = document.all.blink;
		flash(a,color1,color2);
	}
    }
}