var hex = 255; // Initial color value.
var control = 'down';

function fade() {

		if (hex == 255) { control = 'down'; } 
		else if (hex == 0) { control = 'up'; }

  if (control == 'down') { //If color is not black yet
    hex-=15; // increase color darkness
    document.getElementById('fadeThis').style.color = "rgb("+hex+",0,0)";
    setTimeout("fade()",100);
  } else {
		hex+=15; // increase color darkness
    document.getElementById('fadeThis').style.color = "rgb("+hex+",0,0)";
    setTimeout("fade()",10);
	}
}