code: function getNeighboringChart(chartItem, neighboringWeek) {
  	if (neighboringWeek == NeighboringWeek.Previous) {
  		if (chartItem[0].attribs.class.indexOf('dropdown__date-selector-option--disabled') == -1) {
  			return {
  				url: BILLBOARD_BASE_URL + chartItem[0].children[1].attribs.href,
  				date: chartItem[0].children[1].attribs.href.split('/')[3]
  			};
  		}
  	} else {
  		if (chartItem[1].attribs.class.indexOf('dropdown__date-selector-option--disabled') == -1) {
  			return {
  				url: BILLBOARD_BASE_URL + chartItem[1].children[1].attribs.href,
  				date: chartItem[1].children[1].attribs.href.split('/')[3]
  			};
  		}
  	}
  	return {
  		url: '',
  		date: ''
  	}
  }
docs: Gets the neighboring chart for a given chart item and neighboring week type.
  
  @param {HTMLElement} chartItem - The chart item
  @param {enum} neighboringWeek - The type of neighboring week
  @return {object} The neighboring chart with url and week
  
  @example
  
  getNeighboringChart(<div class="dropdown__date-selector-option">...</div>) // { url: 'http://www.billboard.com/charts/hot-100/2016-11-12', date: '2016-11-12' }