function voir(menu)
{
document.getElementById("tdaccueil").className = "MenuGauche";

document.getElementById("menu1").style.display = "none";
document.getElementById("tdmenu1").className = "Menu";
document.getElementById("menu2").style.display = "none";
document.getElementById("tdmenu2").className = "Menu";
document.getElementById("menu3").style.display = "none";
document.getElementById("tdmenu3").className = "Menu";
document.getElementById("menu4").style.display = "none";
document.getElementById("tdmenu4").className = "Menu";

document.getElementById(menu).style.display = "block";
document.getElementById("td"+menu).className = "MenuOver";

}

function masquer()
{
document.getElementById("menu1").style.display = "none";
document.getElementById("menu2").style.display = "none";
document.getElementById("menu3").style.display = "none";
document.getElementById("menu4").style.display = "none";
document.getElementById("tdmenu1").className = "Menu";
document.getElementById("tdmenu2").className = "Menu";
document.getElementById("tdmenu3").className = "Menu";
document.getElementById("tdmenu4").className = "Menu";
}

function startDown(id){
	var dur = 0.5;
	if(document.getElementById(id).style.display == 'none'){ 
		document.getElementById("td_" + id).className = 'Menu_vertical_on';
		effect_1 = Effect.SlideDown(id,{duration:dur}); 
		//new Draggable(id, {revert:true});
		
		var divs = document.getElementById("table_mv").getElementsByTagName("div");
		//alert(divs.length);
		for(var i = 0; i < divs.length; i++){
			//alert(divs[i]+ divs[i].id);
			if(divs[i].id != id){
				if(divs[i].style.display != 'none') {
					Effect.SlideUp(divs[i].id,{duration:dur}); 
				}
				document.getElementById("td_" + divs[i].id).className = 'Menu_vertical';
			}
		}
				 
		return false;
	}
	else{
		effect_1 = Effect.SlideUp(id,{duration:dur});
		document.getElementById("td_" + id).className='Menu_vertical';
				
		return false;
	} 	
}

function changeClass(id, type){
	if(type == "over"){
		if(document.getElementById(id).style.display == 'none'){
			document.getElementById("td_"+id).className = "Menu_vertical_over";
		}
	}else{
		if(document.getElementById(id).style.display == 'none'){
			document.getElementById("td_"+id).className = "Menu_vertical";
		}
	}
}