function menuInstitucional(){
	var distanciaEsquerda = document.body.clientWidth; //screen.availWidth
	if (institucional.style.visibility == "hidden" || institucional.style.visibility == ""){
		if(navigator.appName != "Netscape"){
			if (screen.availWidth == '1280'){	
				posicao = ((distanciaEsquerda-840)/2)-5;
				
			}else{
				posicao = ((distanciaEsquerda-840)/2)-5;
			}
			institucional.style.pixelLeft=posicao;
			institucional.style.pixelTop=140;
			institucional.style.visibility="visible";
		}else{
			if (screen.availWidth == '1280'){	
				//posicao = ((screen.availWidth-770)/2)+156;
				posicao = ((distanciaEsquerda-840)/2);
				
			}else{
				//posicao = ((screen.availWidth-770)/2)+146;
				posicao = ((distanciaEsquerda-840)/2);
			}
			institucional.style.left=posicao;
			institucional.style.top=140;
			institucional.style.visibility="visible";
		}		
	}else if (institucional.style.visibility == "visible"){
		institucional.style.visibility="hidden";
	}
}
function menuServicos(){
	var distanciaEsquerda = document.body.clientWidth; //screen.availWidth
	if (servicos.style.visibility == "hidden" || servicos.style.visibility == ""){
		if(navigator.appName != "Netscape"){
			if (screen.availWidth == '1280'){	
				posicao = ((distanciaEsquerda-770)/2)+212;
				
			}else{
				posicao = ((distanciaEsquerda-770)/2)+212;
			}
			servicos.style.pixelLeft=posicao;
			servicos.style.pixelTop=140;
			servicos.style.visibility="visible";
		}else{
			if (screen.availWidth == '1280'){	
				//posicao = ((screen.availWidth-770)/2)+156;
				posicao = ((distanciaEsquerda-770)/2)+212;
				
			}else{
				//posicao = ((screen.availWidth-770)/2)+146;
				posicao = ((distanciaEsquerda-770)/2)+212;
			}
			servicos.style.left=posicao;
			servicos.style.top=140;
			servicos.style.visibility="visible";
		}		
	}else if (servicos.style.visibility == "visible"){
		servicos.style.visibility="hidden";
	}
}
function menuComprar(){
	var distanciaEsquerda = document.body.clientWidth; //screen.availWidth
	if (comprar.style.visibility == "hidden" || comprar.style.visibility == ""){
		if(navigator.appName != "Netscape"){
			if (screen.availWidth == '1280'){	
				posicao = ((distanciaEsquerda-770)/2)+397;
				
			}else{
				posicao = ((distanciaEsquerda-770)/2)+397;
			}
			comprar.style.pixelLeft=posicao;
			comprar.style.pixelTop=140;
			comprar.style.visibility="visible";
		}else{
			if (screen.availWidth == '1280'){	
				//posicao = ((screen.availWidth-770)/2)+156;
				posicao = ((distanciaEsquerda-770)/2)+397;
				
			}else{
				//posicao = ((screen.availWidth-770)/2)+146;
				posicao = ((distanciaEsquerda-770)/2)+397;
			}
			comprar.style.left=posicao;
			comprar.style.top=140;
			comprar.style.visibility="visible";
		}		
	}else if (comprar.style.visibility == "visible"){
		comprar.style.visibility="hidden";
	}
}
function menuInformativos(){
	var distanciaEsquerda = document.body.clientWidth; //screen.availWidth
	if (informativos.style.visibility == "hidden" || informativos.style.visibility == ""){
		if(navigator.appName != "Netscape"){
			if (screen.availWidth == '1280'){	
				posicao = ((distanciaEsquerda-770)/2)+543;
				
			}else{
				posicao = ((distanciaEsquerda-770)/2)+543;
			}
			informativos.style.pixelLeft=posicao;
			informativos.style.pixelTop=140;
			informativos.style.visibility="visible";
		}else{
			if (screen.availWidth == '1280'){	
				//posicao = ((screen.availWidth-770)/2)+156;
				posicao = ((distanciaEsquerda-770)/2)+543;
				
			}else{
				//posicao = ((screen.availWidth-770)/2)+146;
				posicao = ((distanciaEsquerda-770)/2)+543;
			}
			informativos.style.left=posicao;
			informativos.style.top=140;
			informativos.style.visibility="visible";
		}		
	}else if (informativos.style.visibility == "visible"){
		informativos.style.visibility="hidden";
	}
}
function menuCarrinho(){
	var distanciaEsquerda = document.body.clientWidth; //screen.availWidth
	if (carrinho.style.visibility == "hidden" || carrinho.style.visibility == ""){
		if(navigator.appName != "Netscape"){
			if (screen.availWidth == '1280'){	
				posicao = ((distanciaEsquerda-770)/2)+588;
				
			}else{
				posicao = ((distanciaEsquerda-770)/2)+588;
			}
			carrinho.style.pixelLeft=posicao;
			carrinho.style.pixelTop=57;
			carrinho.style.visibility="visible";
		}else{
			if (screen.availWidth == '1280'){	
				//posicao = ((screen.availWidth-770)/2)+156;
				posicao = ((distanciaEsquerda-770)/2)+588;
				
			}else{
				//posicao = ((screen.availWidth-770)/2)+146;
				posicao = ((distanciaEsquerda-770)/2)+588;
			}
			carrinho.style.left=posicao;
			carrinho.style.top=57;
			carrinho.style.visibility="visible";
		}		
	}else if (carrinho.style.visibility == "visible"){
		carrinho.style.visibility="hidden";
	}
}
function fechaMenu(){
    carrinho.style.visibility="hidden";
	institucional.style.visibility="hidden";
	servicos.style.visibility="hidden";
	comprar.style.visibility="hidden";
	informativos.style.visibility="hidden";
}