function filter(data)
{
	if (data=='trade')
	{
		document.getElementById('trade').className = 'on';
		document.getElementById('office').className = 'off';
		document.getElementById('ware').className = 'off';
		document.getElementById('table1_office').style.display = 'none';
		document.getElementById('table1_trade').style.display = 'block';
		document.getElementById('table1_ware').style.display = 'none';
		
	}
	if (data=='office')
	{
		document.getElementById('office').className = 'on';
		document.getElementById('trade').className = 'off';
		document.getElementById('ware').className = 'off';
		document.getElementById('table1_office').style.display = 'block';
		document.getElementById('table1_trade').style.display = 'none';
		document.getElementById('table1_ware').style.display = 'none';
	}
	if (data=='ware')
	{
		document.getElementById('trade').className = 'off';
		document.getElementById('office').className = 'off';
		document.getElementById('ware').className = 'on';
		document.getElementById('table1_office').style.display = 'none';
		document.getElementById('table1_trade').style.display = 'none';
		document.getElementById('table1_ware').style.display = 'block';
		
	}
}