function toggle_tab(tab_id)
{
	for (i = 0; i < tabs.length; i++) {
		if (tab_id != tabs[i]) {
			document.getElementById(tabs[i]).style.display = 'none';
			document.getElementById("tab" + tabs[i]).style.background = '#EEEEEE';
			document.getElementById("tab" + tabs[i]).style.top = '0px';
		}
	}
	
	document.getElementById(tab_id).style.display = 'block';
	document.getElementById("tab" + tab_id).style.background = '#FFFFFF';
	document.getElementById("tab" + tab_id).style.position = 'relative';
	document.getElementById("tab" + tab_id).style.top = '1px';
	
	document.location='#top';
	
	return false;
}

function hide_all_tabs_except(tab_id)
{
	for (i = 0; i < tabs.length; i++) {
		if (tab_id != tabs[i]) {
			document.getElementById(tabs[i]).style.display = 'none';
			document.getElementById("tab" + tabs[i]).style.display = 'none';
		}
	}
}

function show_all_tabs()
{
	for (i = 0; i < tabs.length; i++) {
		document.getElementById("tab" + tabs[i]).style.display = 'block';
	}
}