var on_color = "black";
var off_color = "green";
var blinkspeed = 500;
var blink_onoff = 1;

function blink(){
	if(blink_onoff == 1){
		document.all.blink.style.color = on_color;
		blink_onoff = 0;
	}
	else
	{
		document.all.blink.style.color = off_color;
		blink_onoff = 1;
	}

}