browser_agent = navigator.userAgent.toLowerCase();
om_safari = browser_agent.indexOf("safari") != -1;
om_opera = browser_agent.indexOf("opera") != -1;
om_ie = browser_agent.indexOf("msie") != -1 && !om_opera;
om_ie7 = browser_agent.indexOf("msie 7") != -1; // ie7 or later
om_ie6Only = om_ie && !om_ie7;
var focusitem, focusstep, hoversub;
function toggleMenuItem(inname) {
	hidelist();
	focusitem = document.getElementById(inname);
	document.getElementById("display-sub").style.display = 'none';
	switch (inname) {
		case 'Product' :
			hoversub = "product-sub";
			break;
		case 'Download' :
			hoversub = "download-sub";
			break;
		case 'Community' :
			hoversub = "community-sub";
			break;
		case 'Support' :
			hoversub = "support-sub";
			break;
		default :
			hoversub = "";
			;
	}
	if (om_ie6Only) {
		if (hoversub == "product-sub") {
			document.getElementById("display-sub").style.margin = "0px 0px 0px 10px";
		} else if (hoversub == "download-sub") {
			document.getElementById("display-sub").style.margin = "0px 0px 0px 35px";
		} else if (hoversub == "community-sub") {
			document.getElementById("display-sub").style.margin = "0px 0px 0px 125px";
		} else if (hoversub == "support-sub") {
			document.getElementById("display-sub").style.margin = "0px 0px 0px 180px";
		}
	} else {
		if (hoversub == "product-sub") {
			document.getElementById("display-sub").style.margin = "0px 0px 0px 20px";
		} else if (hoversub == "download-sub") {
			document.getElementById("display-sub").style.margin = "0px 0px 0px 70px";
		} else if (hoversub == "community-sub") {
			document.getElementById("display-sub").style.margin = "0px 0px 0px 250px";
		} else if (hoversub == "support-sub") {
			document.getElementById("display-sub").style.margin = "0px 0px 0px 360px";
		}
	}

	if (document.getElementById(hoversub)) {
		document.getElementById("display-sub").innerHTML = document
				.getElementById(hoversub).innerHTML;
		document.getElementById("display-sub").style.display = '';
	} else {
		document.getElementById("display-sub").innerHTML = '';
		document.getElementById("display-sub").style.display = '';
	}
}

function hidelist() {
	if (focusstep != null && focusstep.length != 0) {
		if (document.getElementById(focusstep)) {
			document.getElementById(focusstep).style.display = 'none';
		}
	}
}