function updateLiveTab(e) {
	var layer = location.hash.substring(1, location.hash.length);
	livetab(layer);
}
function turnOff(elemID) {
	if (document.getElementById(elemID)) {
		document.getElementById(elemID).style.display = "none";
	}
}
function turnON(elemID) {
	if (document.getElementById(elemID)) {
		document.getElementById(elemID).style.display = "";
	}
}
function activateTab(elemID, clsName) {
	if (document.getElementById(elemID)) {
		document.getElementById(elemID).className = clsName;
	}
}
function inactivateTab(elemID) {
	if (document.getElementById(elemID)) {
		document.getElementById(elemID).className = "";
	}
}
/* determine which submenu to show based on which main menu is shown */
function livetab(tabid) {
	switch (tabid) {
	  case "itmdesc":
				// turn layer on
		turnON("layer1");
				// turn other layers off
		turnOff("layer2");
		turnOff("layer3");
		turnOff("layer4");
				// turn active tab on
		activateTab("itmdesc", "abutton");
				// turn inactive tabs off
		inactivateTab("specifications");
		inactivateTab("extras");
		break;
	  case "specifications":
				// turn layer on
		turnON("layer2");
				// turn other layers off
		turnOff("layer1");
		turnOff("layer3");
		turnOff("layer4");
				// turn active tab on
		activateTab("specifications", "abutton");
				// turn inactive tabs off
		inactivateTab("itmdesc");
		inactivateTab("extras");
		break;
	  case "extras":
				// turn layer on
		turnON("layer3");
				// turn other layers off
		turnOff("layer1");
		turnOff("layer2");
		turnOff("layer4");
				// turn active tab on
		activateTab("extras", "abutton");
				// turn inactive tabs off
		inactivateTab("itmdesc");
		inactivateTab("specifications");
		break;
	  default:
		break;
	}
	/* end switch to set submenu variable */
}
$j(document).ready(function () {
	$j("table.product_specs tbody tr:odd").addClass("odd");
	$j("table.product_specs tbody tr:even").addClass("even");
	updateLiveTab();
});