var scrollDist = 0;
var scrollInc = 178;
var sliderWidth = 0;
var viewerWidth = 0;
function scrollLeft()
{
  scrollDist -= scrollInc;
  var targetMargin = scrollDist + "px";
	$("#collectionsSlider").animate({marginLeft:targetMargin},{duration: 500});
}
function requestLeftScroll()
{
  if (sliderWidth + scrollDist - scrollInc > viewerWidth)
  {
    scrollLeft();
  }
  return false;
}
function scrollRight()
{
  scrollDist += scrollInc;
  var targetMargin = scrollDist + "px";
  $("#collectionsSlider").animate({marginLeft:targetMargin},{duration:500});
}
function requestRightScroll()
{
  if (scrollDist < 0)
  {
    scrollRight();
  }
  return false;
}
function wireUpButtons()
{
	$("#leftarrow a").click(requestRightScroll);
	$("#rightarrow a").click(requestLeftScroll);
	sliderWidth = $("#collectionsSlider").width();
	viewerWidth = $("#collections").width();
}
$(document).ready(wireUpButtons);