/**
 * deplacement du curseur du niveau
 */
 function deplacerCurseur(niveau)
{
	switch(niveau)
	{
		case 1 : 
			newMarginLeft = -3;
			break;
		case 2 : 
			newMarginLeft = 60;
			break;
		case 3 : 
			newMarginLeft = 123;
			break;
		case 4 : 
			newMarginLeft = 186;
			break;
		case 5 : 
			newMarginLeft = 250;
			break;
		case 6 : 
			newMarginLeft = 312;
			break;
		case 7 : 
			newMarginLeft = 374;
			break;
		case 8 : 
			newMarginLeft = 438;
			break;
		case 9 : 
			newMarginLeft = 502;
			break;
	}
	 
		$("niv_curseur").style.left = eval(newMarginLeft)+"px";
		$("jauge_niveau").style.marginLeft = "-72px";
}