var rub_off = new Array()
	var rub_on = new Array()
			
	for(i=1; i< 9; i++){
		rub_off[i]  = new Image(); rub_off[i].src  = "img/bt" + i + "_f.gif";
		rub_on[i]  = new Image(); rub_on[i].src  = "img/bt" + i + "_o.gif";
	}
	
	/*function m_over(msg) {
   		window.status = msg;
   		return true;
   	}
*/
//-----------------------------------------------------------------------------------	
	function over_rub(i){
		
		if (document.images){
			document.images['rub' + i].src = rub_on[i].src;
		}
		//window.status = st;
		//return true;
	}

	function out_rub(i){
		if (document.images){
				document.images['rub' + i].src = rub_off[i].src;
		}
		//window.status = " ";
		//return true;
	}
//--------------------------------------------------------------------------------


function montre(calque){
	var maClass= document.getElementById(calque).className;
	//document.getElementById("acces").className = "invisible";
	document.getElementById(calque).className = (maClass=="voyante")?"invisible":"voyante";
}