function showdiv( pass )
{
	var divs = document.getElementsByTagName( 'div' );
	for( i = 0; i < divs.length; i++ )
	{
		if( divs[i].id.match( pass ) )
		{//if they are 'see' divs
			SetDisplay( divs[i], 'block' )
		}
		else
		{
			SetDisplay( divs[i], 'none' )
		}
	}
}

function SetDisplay( div, val )
{
	if ( document.getElementById ) // DOM3 = IE5, NS6
	{
		if( isString( div ) )
			div = document.getElementById( div );

		div.style.display = val;// show/hide
	}
	else
	{
		if ( document.layers ) // Netscape 4
		{
			document.layers[ div ].display = val;
		}
		else // IE 4
		{
			document.all.div.display = val;
		}
	}
}

function isString( a ) {
    return typeof a == 'string';
}