var oLastBtn=0;
bIsMenu = false;

// Menu Esquerdo

function RaiseButton(){
	window.event.cancelBubble=true;
	oBtn = window.event.srcElement;
	var bChosen = false;
	if(oLastBtn && oLastBtn != oBtn){
		HideButton();
	}
	if(oBtn.id == 'HomeBtn'){
	HomeSpan.className = 'LeftNavUp';
	}
	if(oBtn.buttonType){
		if (oBtn.buttonType == "LeftNavChosen") {
		oBtn.className = "LeftNavUp";
		}
		else {
		oBtn.className = oBtn.buttonType + "Up"; 
		}
		oLastBtn=oBtn;
	}
	else
		oLastBtn = 0;
}

function HideHome(){
HideButton();
}

function DepressButton(){
	window.event.cancelBubble=true;
	oBtn = window.event.srcElement;
	if(oBtn.buttonType){
		oBtn.className = oBtn.buttonType + "Down"; 
		if (oBtn.className == "LeftNavChosenDown") {
		oBtn.className = "LeftNavDown";
		}
	}
}


function HideButton(){
	if (oLastBtn.buttonType == "LeftNavChosen") {
		oLastBtn.className = "LeftNavChosen";
	}
	else {
	oLastBtn.className = oLastBtn.buttonType + "Off";
	if(document.all("HomeSpan")){HomeSpan.className = "LeftNavOff";}
	}
}

// Menu do Meio

function RaiseButtonMiddle(){
	window.event.cancelBubble=true;
	oBtn = window.event.srcElement;
	var bChosen = false;
	if(oLastBtn && oLastBtn != oBtn){
		HideButtonMiddle();
	}
	if(oBtn.id == 'HomeBtn'){
	HomeSpan.className = 'MiddleNavUp';
	}
	if(oBtn.buttonType){
		if (oBtn.buttonType == "MiddleNavChosen") {
		oBtn.className = "MiddleNavUp";
		}
		else {
		oBtn.className = oBtn.buttonType + "Up"; 
		}
		oLastBtn=oBtn;
	}
	else
		oLastBtn = 0;
}

function HideHomeMiddle(){
HideButtonMiddle();
}

function DepressButtonMiddle(){
	window.event.cancelBubble=true;
	oBtn = window.event.srcElement;
	if(oBtn.buttonType){
		oBtn.className = oBtn.buttonType + "Down"; 
		if (oBtn.className == "MiddleNavChosenDown") {
		oBtn.className = "MiddleNavDownMiddle";
		}
	}
}


function HideButtonMiddle(){
	if (oLastBtn.buttonType == "MiddleNavChosen") {
		oLastBtn.className = "MiddleNavChosen";
	}
	else {
	oLastBtn.className = oLastBtn.buttonType + "Off";
	if(document.all("HomeSpan")){HomeSpan.className = "MiddleNavOff";}
	}
}

// Menu Direito

function RaiseButtonRight(){
	window.event.cancelBubble=true;
	oBtn = window.event.srcElement;
	var bChosen = false;
	if(oLastBtn && oLastBtn != oBtn){
		HideButtonRight();
	}
	if(oBtn.id == 'HomeBtn'){
	HomeSpan.className = 'RightNavUp';
	}
	if(oBtn.buttonType){
		if (oBtn.buttonType == "RightNavChosen") {
		oBtn.className = "RightNavUp";
		}
		else {
		oBtn.className = oBtn.buttonType + "Up"; 
		}
		oLastBtn=oBtn;
	}
	else
		oLastBtn = 0;
}

function HideHomeRight(){
HideButtonRight();
}

function DepressButtonRight(){
	window.event.cancelBubble=true;
	oBtn = window.event.srcElement;
	if(oBtn.buttonType){
		oBtn.className = oBtn.buttonType + "Down"; 
		if (oBtn.className == "RightNavChosenDown") {
		oBtn.className = "RightNavDownRight";
		}
	}
}


function HideButtonRight(){
	if (oLastBtn.buttonType == "RightNavChosen") {
		oLastBtn.className = "RightNavChosen";
	}
	else {
	oLastBtn.className = oLastBtn.buttonType + "Off";
	if(document.all("HomeSpan")){HomeSpan.className = "RightNavOff";}
	}
}