function tabGrouping() {
			var current_selected = "";
			this.changeSelection = tabChangeSelection;

			
			function tabChangeSelection(new_tab_id, update_master_current_tab) {
				if (document.getElementById(current_selected)) {
					deactivateTab(current_selected);
				}
				current_selected = new_tab_id;
				activateTab(new_tab_id, update_master_current_tab);
			}
			
			function activateTab(which_tab, update_master_current_tab) {
				if (document.getElementById(which_tab+'_holder') != null) {
				document.getElementById(which_tab+'_holder').className = "tabHolder activeTab";
				document.getElementById(which_tab+'_label').className = "pdpTabLabel activeTab";
				document.getElementById(which_tab+'_content').className = "tabContent activeTabContent";
				}
				
			}
			
			function deactivateTab(which_tab) {
				if (document.getElementById(which_tab+'_holder') != null) {
				document.getElementById(which_tab+'_holder').className = "tabHolder inactiveTab";
				document.getElementById(which_tab+'_label').className = "pdpTabLabel inactiveTab";
				document.getElementById(which_tab+'_content').className = "tabContent inactiveTabContent";
				}
			}
			}

			pdp_info_tab_group = new 
			tabGrouping();pdp_info_tab_group.changeSelection('pdpInfoTab1',0);