function table(){
  TR = document.getElementsByTagName('tr');
	nbr = TR.length;
	for(i=0; i < nbr ; i++){
		if(TR[i].className == 'claire' || TR[i].className == 'fonce'){
			TR[i].onmouseover = function(){
				this.MEM = this.className;
				this.className = 'rouge';
			}
			TR[i].onmouseout = function(){
				this.className = this.MEM;
			}
		}
	}
}