var obj;

function ease(targetX){ 
        var leftPosPlus = obj.offsetLeft + (0 - targetX);
        obj.style.left  = leftPosPlus + "px"; 
        var leftPosVM   = obj.offsetLeft * 0.95;
        obj.style.left  = leftPosVM + "px"; 
        var leftPosMin  = obj.offsetLeft - (0 - targetX); 
        obj.style.left  = leftPosMin + "px"; 
        if (Math.round(obj.offsetLeft) == targetX){ 
            clearInterval(move);
			return;
        } 
} 
function mueve(capa){ 
		obj 	= document.getElementById('boton' + capa); 
		obj.style.width="49px"
		/*Me parece que hay que hacerlo con setInterval*/
       /* var move = setInterval("mueve()",1000);
		clearInterval(move,)
		setTimeout("clearInterval("+id+")",15000);*/
} 
function restaura(capa) {
		obj 	= document.getElementById('boton' + capa); 
		obj.style.width="30px";
		/*x_pos 	= obj.style.left;
		x_pos 	= parseInt(x_pos);
		obj.style.left = 0 + "px";
        clearInterval(move);
		return;		*/
}