function preload(){
	imgload=new Array();
	for(var j=0; j<preload.arguments.length; j++){
		imgload[j]=new Image();
		imgload[j].src=preload.arguments[j];
	}
}

preload('image/block/left-content/menu_up_automation.gif','image/block/left-content/menu_up_energie.gif','image/block/left-content/menu_up_formation.gif','image/block/left-content/menu_up_ingenierie.gif','image/block/left-content/menu_up_process.gif','image/block/left-content/menu_up_robinetterie.gif','image/block/left-content/menu_up_service.gif');