.col_gauche{
	width:248px;
	float:left;
}

.col_centrale{
	float:left; 
	width:248px;
	margin-left:8px;
}

.col_droite{
	float:right; 
	width:248px;
}

.pied{
	width:744px;
	padding:0 8px 0 8px;
	background:url(../images/fond_pied.jpg) repeat-y;
}