var menuSelect = new Array( 'tech' , 'tech' );
var n = 0 ;
var DCP_HideMenuTimer = "";
var delayT = 400;


var browser = navigator.appName;
var os = navigator.platform;
var ie = "Microsoft Internet Explorer";
var netscape = "Netscape";
var mac = "MacPPC";
	    
if(browser == netscape && (parseInt(navigator.appVersion) == 4)) {
	delayT = 2000;
}

function navMenu(tab,c) {
	closeMenu(tab,c);
	DCP_clearTimeout();
	if (document.getElementById) {
			if ( document.getElementById(tab).style.visibility == "visible" )
				document.getElementById(tab).style.visibility = "hidden";
			else
				document.getElementById(tab).style.visibility = "visible";
			}
	else if (document.layers) {
			if ( document.layers[tab].visibility == "visible") {
				document.layers[tab].visibility = 'hidden'; 
				}
			else {
				document.layers[tab].visibility = "visible"; 
				}
			}
	else {
			if ( document.all[tab].style.visibility == "visible" )
				document.all[tab].style.visibility = "hidden";
			else
				document.all[tab].style.visibility = "visible";
			}
}


function closeMenu(tab,c) {
	var tab2 = menuSelect[c];
	if (document.getElementById) {
			if ( document.getElementById(tab2).style.visibility == "visible" )
				document.getElementById(tab2).style.visibility = "hidden";
			else
				document.getElementById(tab2).style.visibility = "hidden";
			}
	else if (document.layers) {
			if ( document.layers[tab2].visibility == "visible") {
				document.layers[tab2].visibility = 'hidden'; 
				}
			else {
				document.layers[tab2].visibility = "hidden"; 
				}
			}
	else {
			if ( document.all[tab2].style.visibility == "visible" )
				document.all[tab2].style.visibility = "hidden";
			else
				document.all[tab2].style.visibility = "hidden";
			}
}

function DCP_timeOut(e) {
	var funC = new Array('DCP_Hide1()','DCP_Hide2()');
	var item = funC[e];
	DCP_HideMenuTimer = setTimeout( item , delayT );
}

function inti_DCP_timeOut() {
	var item = 'DCP_Hide1()';
	setTimeout( item , 10 );
}

function DCP_Hide1() {
	tab2 = 'tech';
	if (document.getElementById) {
			if ( document.getElementById(tab2).style.visibility == "visible" )
				document.getElementById(tab2).style.visibility = "hidden";
			else
				document.getElementById(tab2).style.visibility = "hidden";
			}
	else if (document.layers) {
			if ( document.layers[tab2].visibility == "visible") {
				document.layers[tab2].visibility = 'hidden'; 
				}
			else {
				document.layers[tab2].visibility = "hidden"; 
				}
			}
	else {
			if ( document.all[tab2].style.visibility == "visible" )
				document.all[tab2].style.visibility = "hidden";
			else
				document.all[tab2].style.visibility = "hidden";
			}
	imgOff('img5');
}

function DCP_Hide2() {
	tab2 = 'menu2';
	if (document.getElementById) {
			if ( document.getElementById(tab2).style.visibility == "visible" )
				document.getElementById(tab2).style.visibility = "hidden";
			else
				document.getElementById(tab2).style.visibility = "hidden";
			}
	else if (document.layers) {
			if ( document.layers[tab2].visibility == "visible") {
				document.layers[tab2].visibility = 'hidden'; 
				}
			else {
				document.layers[tab2].visibility = "hidden"; 
				}
			}
	else {
			if ( document.all[tab2].style.visibility == "visible" )
				document.all[tab2].style.visibility = "hidden";
			else
				document.all[tab2].style.visibility = "hidden";
			}
}

function DCP_clearTimeout() {
	if (DCP_HideMenuTimer) clearTimeout(DCP_HideMenuTimer);
	DCP_HideMenuTimer = null;
	imgOn('img5');
}

function allMenuClose() {
	var tab = 'tech';
	if (document.getElementById) {
			if ( document.getElementById(tab).style.visibility == "visible" )
				document.getElementById(tab).style.visibility = "hidden";
			else
				document.getElementById(tab).style.visibility = "hidden";
			}
	else if (document.layers) {
			if ( document.layers[tab].visibility == "visible") {
				document.layers[tab].visibility = 'hidden'; 
				}
			else {
				document.layers[tab].visibility = "hidden"; 
				}
			}
	else {
			if ( document.all[tab].style.visibility == "visible" )
				document.all[tab].style.visibility = "hidden";
			else
				document.all[tab].style.visibility = "hidden";
			}

	var tab = 'menu2';
	if (document.getElementById) {
			if ( document.getElementById(tab).style.visibility == "visible" )
				document.getElementById(tab).style.visibility = "hidden";
			else
				document.getElementById(tab).style.visibility = "hidden";
			}
	else if (document.layers) {
			if ( document.layers[tab].visibility == "visible") {
				document.layers[tab].visibility = 'hidden'; 
				}
			else {
				document.layers[tab].visibility = "hidden"; 
				}
			}
	else {
			if ( document.all[tab].style.visibility == "visible" )
				document.all[tab].style.visibility = "hidden";
			else
				document.all[tab].style.visibility = "hidden";
			}

}