function changeCont(maSect, nbDiv, monId)
	{
	
		var j = 0 ;
		
		for(i=0; i<nbDiv; i++)
		{
			j= i+1 ;
			if( j<10 )
			{
				eval("document.getElementById('btn"+j+"').className = ''  ;");
				eval("document.getElementById('cont0"+j+"').style.display = 'none'  ;");
				eval("document.getElementById('cont0"+j+"_01').style.display = 'none'  ;");
			}
			else
			{
				eval("document.getElementById('btn"+j+"').className = ''  ;");
				eval("document.getElementById('cont"+j+"').style.display = 'none'  ;");
				eval("document.getElementById('cont"+j+"_01').style.display = 'none'  ;");
			}
		}
	
		document.getElementById(monId).className = "select"  ;
		document.getElementById(maSect).style.display = "block"  ;
	}