function showTab(id){
	var table = document.getElementById("form_table");

	var Browser = navigator.appName;
	var Version = parseInt(navigator.appVersion);
	el=document.getElementById(id).style;


	for (var i=0; i < table.rows.length; i++) {
		var el = table.rows[i].style;
		if (table.rows[i].id == id){
			if (Browser == "Netscape" & Version >= 4)
				el.display = 'table-row';
			if (Browser == "Microsoft Internet Explorer" & Version >= 4)
				el.display =  'block';
		} else {
			el.display =  'none';
		}
	}
}