function deplie(id)
{
	

	var divs=document.getElementsByTagName("div");
	for(var i=0 ; i<divs.length ; i++)
	{
			if(divs[i].id.search(/^bloc/)>=0)
			{
				if(divs[i].id=='bloc'+id)
				{
				divs[i].style.display= divs[i].style.display== "block"?"none":"block";
				changeFontWeight(id);
				}
			else
			{
				if(divs[i].id!='bloc_info')
				{
					divs[i].style.display= "none";   
				}
			}
			
			}
	}
}

function replie()
{
	var divs=document.getElementsByTagName("div");
	for(var i=0 ; i<divs.length ; i++)
	{
		if(divs[i].id.search(/^bloc/)>=0)
		{
			divs[i].style.display= "none";   
		}
	}
}

function changeFontWeight(num) {
	var divs=document.getElementsByTagName("strong");
	for(var i=0 ; i<divs.length ; i++)
	{
		if(divs[i].id.search(/^etape_/)>=0)
		{
			if(divs[i].id=='etape_'+num)
			{
				divs[i].style.fontWeight= divs[i].style.fontWeight== "bold"?"normal":"bold";
			}
			else
			{
				divs[i].style.fontWeight= "normal";   
			}
		
		}
	}
}