function gebi(id)
{
	return document.getElementById(id)
}
function visibility( id )
{
	var blockId = gebi( id );
	if ( blockId.style.display == 'none' )
	{
		blockId.style.display = '';
	} else
	{
		blockId.style.display = 'none';
	}
}
function show_layer( id )
{
	var blockId = gebi( id );
	blockId.style.display = '';
}
function hide_layer( id )
{
	var blockId = gebi( id );
	blockId.style.display = 'none';
}
function showhide_layer( id, idh )
{
	var blockId = gebi( id );
	var blockIdh = gebi( idh );
	blockId.style.display = '';
	blockIdh.style.display = 'none';
}
function gopage(obj){
	var uri = obj.options[obj.selectedIndex].value;
	if( uri != '' )
	document.location.href = uri;
}
function go_page( href )
{
	window.location.href = href;
	return true;
}