function changeText(theDiv, text, statut)
{
	if(statut == 'over')
	{
	document.getElementById(theDiv).innerHTML=text+'_';
	document.getElementById(theDiv).style.color="#fffc00";
	}
	else if (statut == 'out')
	{
	document.getElementById(theDiv).innerHTML='_'+text;
	document.getElementById(theDiv).style.color="#FFFFFF";
	}
}

function hide(theDiv)
{
	document.getElementById(theDiv).style.visibility="hidden";
	changeBack('');
}

function show(theDiv)
{
	document.getElementById(theDiv).style.visibility="visible";
}

function changeBack(mainUrl)
{
	document.getElementById("groupbackground").style.background="url("+mainUrl+")";
}