$(function ()
{
  //Get our elements for faster access and set overlay width
  var div = $('div.sc_menu'),
		ul = $('ul.sc_menu'),
		ulPadding = 15;

  //Get menu width
  var divWidth = div.width();

  //Remove scrollbars	
  div.css({ overflow: 'hidden' });

  //Find last image container
  var lastLi = ul.find('li:last-child');

  //When user move mouse over menu
  div.mousemove(function (e)
  {
    //As images are loaded ul width increases,
    //so we recalculate it each time
    var ulWidth = lastLi[0].offsetLeft + lastLi.outerWidth() + ulPadding;
    var left = (e.pageX - div.offset().left) * (ulWidth - divWidth) / divWidth;
    div.scrollLeft(left);
  });
});