function hideDiv() { 
	if (document.getElementById) { // DOM3 = IE5, NS6 
		document.getElementById('hideshow').style.visibility = 'hidden'; 
		document.getElementById('id_flash_1').style.visibility = 'visible';
		document.getElementById('id_flash_2').style.visibility = 'visible';
		document.getElementById('id_flash_3').style.visibility = 'visible';
		document.getElementById('id_index_particulier').style.visibility = 'visible';
		document.getElementById('id_index_entreprise').style.visibility = 'visible';
	} 
	else { 
		if (document.layers) { // Netscape 4 
			document.hideshow.visibility = 'hidden'; 
			document.getElementById('id_flash_1').style.visibility = 'visible';
			document.getElementById('id_flash_2').style.visibility = 'visible';
			document.getElementById('id_flash_3').style.visibility = 'visible';
			document.getElementById('id_index_particulier').style.visibility = 'visible';
			document.getElementById('id_index_entreprise').style.visibility = 'visible';
		} 
		else { // IE 4 
			document.all.hideshow.style.visibility = 'hidden'; 
			document.getElementById('id_flash_1').style.visibility = 'visible';
			document.getElementById('id_flash_2').style.visibility = 'visible';
			document.getElementById('id_flash_3').style.visibility = 'visible';
			document.getElementById('id_index_particulier').style.visibility = 'visible';
			document.getElementById('id_index_entreprise').style.visibility = 'visible';
			} 
		} 
	}
	
	function showDiv() { 
		if (document.getElementById) { // DOM3 = IE5, NS6 
			document.getElementById('hideshow').style.visibility = 'visible'; 
			document.getElementById('id_flash_1').style.visibility = 'hidden'; 
			document.getElementById('id_flash_2').style.visibility = 'hidden'; 
			document.getElementById('id_flash_3').style.visibility = 'hidden'; 
			document.getElementById('id_index_particulier').style.visibility = 'hidden';
			document.getElementById('id_index_entreprise').style.visibility = 'hidden';			
		} 
		else { 
			if (document.layers) { // Netscape 4
				document.hideshow.visibility = 'visible'; 
				document.getElementById('id_flash_1').style.visibility = 'hidden';
				document.getElementById('id_flash_2').style.visibility = 'hidden'; 
				document.getElementById('id_flash_3').style.visibility = 'hidden'; 
				document.getElementById('id_index_particulier').style.visibility = 'hidden';
				document.getElementById('id_index_entreprise').style.visibility = 'hidden';
			} 
			else { // IE 4 
				document.all.hideshow.style.visibility = 'visible'; 
				document.getElementById('id_flash_1').style.visibility = 'hidden';
				document.getElementById('id_flash_2').style.visibility = 'hidden'; 
				document.getElementById('id_flash_3').style.visibility = 'hidden'; 
				document.getElementById('id_index_particulier').style.visibility = 'hidden';
				document.getElementById('id_index_entreprise').style.visibility = 'hidden';
			} 
		} 
	}