function aff_sousMenu(tr_obj,plop,img_replace,img_from,link_id){
	if(navigator.appName.indexOf("Internet Explorer") != -1){
		block_val = "block";
	}else{
		block_val = "table-row";
	}	
	shct_obj = document.getElementById(tr_obj);
	switch(shct_obj.style.display){	
		case 'block':
			link_color = "#ffffff";
			new_dspTR = 'none';
			imageload = img_from;
		break;
		default:				
			new_dspTR = block_val;			
			imageload = img_replace;
			link_color = "#000000";
		break;
	}
	document.getElementById(plop).src = imageload
	tr_all = zone_sommaire.getElementsByTagName('TR')
	link_all = zone_sommaire.getElementsByTagName('A')
	linkColored = document.getElementById(link_id)
	for(a=0;a<link_all.length;a++){
		if(link_all[a].className == 'white'){		
			if(link_all[a].id == link_id){
				link_all[a].style.color = '#000000';
			}else{
				link_all[a].style.color = '#ffffff';
				document.getElementById(plop).src = imageload;
			}
		}
	}
	for(tr=0;tr<tr_all.length;tr++){
		if(tr_all[tr].className == 'menu'){
			tr_all[tr].style.display = 'none';
		}
	}
	for(tr=0;tr<tr_all.length;tr++){
		if(tr_all[tr].id == tr_obj ){
			tr_all[tr].style.display = new_dspTR;
		}
	}
}