/*
	Be sure that the height setting below is big enough to handle the content, otherwise the 
	 page will change height in some browsers.
	 
	Also be sure NOT to change the width setting.
	ticker_css_style      = "width: 692px; height: 24px;";
*/
ticker_css_classname  = "v4grey11";
ticker_css_style      = "position:relative; top:5px; width: 470px; height: 24px;";

var pause_length     = 8000;
var total_fade_steps = 20;
var fade_step_length = 80;
var initial_pause    = 15000;
var ticker_text_color = new Array(51,51,51);
var ticker_link_color = new Array(0,51,102);
var ticker_bg_color   = new Array(255,255,255);

// for code branching
var is_old_ie  = document.all && !document.getElementById;
var is_dom     = document.getElementById;
var current_string = 0;

function do_fade(){
  if (current_string >= ticker_content.length)
    current_string = 0;
  if (is_dom){
    document.getElementById("ticker").style.color = "rgb(" + ticker_bg_color[0] + ", " + ticker_bg_color[1] + ", " + ticker_bg_color[2] + ")";
    document.getElementById("ticker").innerHTML   = ticker_content[current_string];
	
	fade_link(1);
	fade_text(1);

  }
  else if (is_old_ie)
    document.all.ticker.innerHTML = ticker_content[current_string];
  current_string++
}

function get_color(step, type) {
  var rgb_trans;
  var fade_color = new Array(3);

/*
  if (step == total_fade_steps) {
	  if (type == "link") {
		  return ("rgb(" + ticker_link_color[0] + ", " + ticker_link_color[1] + ", " + ticker_link_color[2] + ")");
	  } else {
		  return ("rgb(" + ticker_text_color[0] + ", " + ticker_text_color[1] + ", " + ticker_text_color[2] + ")");
	  }
  }
*/  
  for(var i=0; i<3; i++) {
	if (type == "link") {
	  rgb_trans = (ticker_bg_color[i] - ticker_link_color[i]);
	} else {
	  rgb_trans = (ticker_bg_color[i] - ticker_text_color[i]);
	}  
    
    if(rgb_trans > 0) {
      fade_color[i] = ticker_bg_color[i] - (Math.round((rgb_trans/total_fade_steps))*step);
    } else {
      fade_color[i] = ticker_bg_color[i] + (Math.round((Math.abs(rgb_trans)/total_fade_steps))*step);
    }
  }
  return ("rgb(" + fade_color[0] + ", " + fade_color[1] + ", " + fade_color[2] + ")");
}

var timeout;

function fade_text(step) {
  if(step <= total_fade_steps) {	
    document.getElementById("ticker").style.color = get_color(step, "text");
    fade_link(step);
    step++;
    timeout = setTimeout("fade_text(" + step + ")", fade_step_length);
  } else {
    clearTimeout(timeout);
    document.getElementById("ticker").style.color = "rgb(" + ticker_text_color[0] + ", " + ticker_text_color[1] + ", " + ticker_text_color[2] + ")";
	
	if (current_string == 1)
	    setTimeout("do_fade()", initial_pause);
	else 
		setTimeout("do_fade()", pause_length);
  }   
}

function fade_link(step){
  var obj = document.getElementById("ticker").getElementsByTagName("A");
  if (obj.length > 0){
    for (i = 0; i < obj.length; i++)
      obj[i].style.color = get_color(step, "link");
  }
}

function show_ticker() {
	if (is_old_ie || is_dom)
		document.write('<div id="ticker" class="'+ticker_css_classname+'" style="'+ticker_css_style+'"></div>');
	
	if (window.addEventListener) {
		window.addEventListener("load", do_fade, false);
	} else if (window.attachEvent) {
		window.attachEvent("onload", do_fade);
	} else if (document.getElementById) {
		window.onload = do_fade;
	}
}