function startsWithOneOf(string, substrings)
	{
		for (var i in substrings) { if (string.indexOf(substrings[i]) == 0) { return true; } }
		return false;
	}
	
	function get_expanded_elements(id_prefixes)
	{
		return YAHOO.util.Dom.getElementsBy(function(e) { return startsWithOneOf(e.id, id_prefixes) });
	}

	function expand_descriptions(id_prefixes)
	{
    var request = YAHOO.util.Connect.asyncRequest('POST', 
      '/is-bin/INTERSHOP.enfinity/WFS/WHWC-WHWC-Site/en_US/-/USD/ViewStandardCatalog-SaveViewType', null, 'ViewType=expanded');
		YAHOO.util.Dom.setStyle(get_expanded_elements(id_prefixes), 'display', '');
		YAHOO.util.Dom.setStyle('link_view_expanded', 'display', 'none');
		YAHOO.util.Dom.setStyle('link_view_collapsed', 'display', '');
	}
	
	function collapse_descriptions(id_prefixes)
	{
    var request = YAHOO.util.Connect.asyncRequest('POST', 
      '/is-bin/INTERSHOP.enfinity/WFS/WHWC-WHWC-Site/en_US/-/USD/ViewStandardCatalog-SaveViewType', null, 'ViewType=collapsed');
		YAHOO.util.Dom.setStyle(get_expanded_elements(id_prefixes), 'display', 'none');
		YAHOO.util.Dom.setStyle('link_view_expanded', 'display', '');
		YAHOO.util.Dom.setStyle('link_view_collapsed', 'display', 'none');
	}