function showLostPassForm(){
		var ns4 = (document.layers);
		var ie4 = (document.all && !document.getElementById);
		var ie5 = (document.all && document.getElementById);
		var ns6 = (!document.all && document.getElementById);
		// Netscape 4
		if(ns4){
			document.layers['fond_gris_popup'].visibility = "show";
			document.layers['lost_pass_block'].visibility = "show";
		}
		// Explorer 4
		else if(ie4){
			document.all['fond_gris_popup'].style.visibility = "visible";
			document.all['lost_pass_block'].style.visibility = "visible";
			
		}
		// W3C - Explorer 5+ and Netscape 6+
		else if(ie5 || ns6){
			document.getElementById('fond_gris_popup').style.visibility = "visible";
			document.getElementById('lost_pass_block').style.visibility = "visible";
		}

		if(document.getElementById('lost_pass_block')) {
			var input = document.getElementById('email_lost_pass');
			input.focus();
		}		
}


function hideLostPassForm(){
		var ns4 = (document.layers);
		var ie4 = (document.all && !document.getElementById);
		var ie5 = (document.all && document.getElementById);
		var ns6 = (!document.all && document.getElementById);
		// Netscape 4
		if(ns4){
			document.layers['fond_gris_popup'].visibility = "hide";
			document.layers['lost_pass_block'].visibility = "hide";
		}
		// Explorer 4
		else if(ie4){
			document.all['fond_gris_popup'].style.visibility = "hidden";
			document.all['lost_pass_block'].style.visibility = "hidden";
			
		}
		// W3C - Explorer 5+ and Netscape 6+
		else if(ie5 || ns6){
			document.getElementById('fond_gris_popup').style.visibility = "hidden";
			document.getElementById('lost_pass_block').style.visibility = "hidden";
		}

		if(document.getElementById('lost_pass_block')) {
			var input = document.getElementById('email_lost_pass');
			input.focus();
		}
		
}