var tmpQuery
function refobj(object)
{
	if (document.getElementById)
	{   
	    if (document.getElementById(object))
	    {
		    return document.getElementById(object);
		} else {
		    return false;
		}
	}
	else if (document.all)
	{
		return eval('document.all.' + object);
	}
	else if (document.layers)
	{
		return eval('document.layers[' + object+']');
	}
	else
	{
		return false;
	}
}

function toggle_off(object)
{
	object = refobj(object);
	if ( !object.style )
	{
		return false;
	}
	
	object.style.display = 'none';
	
}
function toggle_on(object)
{
	object = refobj(object);
	if ( !object.style )
	{
		return false;
	}
	
	object.style.display = '';
	
}

function showExtSerch()
{
	toggle_off('defSearch');
	toggle_on('extSearch');
	toggle_on('extSearch1');
	tmpQuery = document.forms['form3'].query.value;
	document.forms['form3'].query.value = '';
}

function hideExtSerch()
{
	toggle_on('defSearch');
	toggle_off('extSearch');
	toggle_off('extSearch1');
	document.forms['form3'].query.value = tmpQuery;
}