function changeBackGroundColorActive(idElement){
	try{
		el = document.getElementById(idElement);
		el.style.backgroundColor="#B4B4B4";
	}catch(e){}
}

function changeBackGroundColorNoActive(idElement){
	try{
		el = document.getElementById(idElement);
		el.style.backgroundColor="#FFFFFF";
	}catch(e){}
}