var is_chrome = navigator.userAgent.toLowerCase().indexOf('chrome') > -1;

var slidetimer = 1;
var slidespeed = 1;
var startingopacity = 40;

if(is_chrome == true){
	slidetimer = slidetimer / 2;
	slidespeed = slidespeed / 2;
} else {
	slidetimer = slidetimer * 2;
	slidespeed = slidespeed * 2;
}



function slideContent(id,prefix,timer) {
  var div = document.getElementById(id);
  var slider = div.parentNode;
  clearInterval(slider.timer);
  slider.section = parseInt(id.replace(/\D/g,''));
  slider.target = div.offsetTop;
  slider.style.top = slider.style.top || '0px';
  slider.current = slider.style.top.replace('px','');
  slider.direction = (Math.abs(slider.current) > slider.target) ? 1 : -1;
  slider.style.opacity = startingopacity * .01;
  slider.style.filter = 'alpha(opacity=' + startingopacity + ')';
  slider.timer = setInterval( function() { slideAnimate(slider,prefix,timer) }, slidetimer);
}

function slideAnimate(slider,prefix,timer) {
  var curr = Math.abs(slider.current);
  var tar = Math.abs(slider.target);
  var dir = slider.direction;
  if((tar - curr <= slidespeed && dir == -1) || (curr - tar <= slidespeed && dir == 1)) {
    slider.style.top = (slider.target * -1) + 'px';
	slider.style.opacity = 1;
	slider.style.filter = 'alpha(opacity=100)';
    clearInterval(slider.timer);
	if(slider.autoscroll) {
	  setTimeout( function() { autoScroll(slider.id,prefix,timer) }, timer * 1000);
	}
  } else {
	var pos = (dir == 1) ? parseInt(slider.current) + slidespeed : slider.current - slidespeed;
    slider.current = pos;
    slider.style.top = pos + 'px';
  }
}


function autoScroll(id,prefix,timer,restart) {
  var div = document.getElementById(id);
  div.autoscroll = (!div.autoscroll && !restart) ? false : true;
  if(div.autoscroll) {
    var sections = div.getElementsByTagName('div');
    var length = sections.length;
    div.section = (div.section && div.section < length) ? div.section + 1 : 1;
    slideContent(prefix + '-' + div.section,prefix,timer);
  }
}

function autonewsload(){
	autoScroll('newsticker_shell', 'newsticker_news', 8, true);
}

window.onload = autonewsload;