function selectDisplay(tag_id)
{
	if(tag_id == 11)
	{
		document.getElementById('tag_id_11').style.display = 'block';
		document.getElementById('tag_id_12').style.display = 'none';
		//document.getElementById('mtr_station').style.display = 'none';
	}else if(tag_id == 12){
		document.getElementById('tag_id_11').style.display = 'none';
		document.getElementById('tag_id_12').style.display = 'block';
		//document.getElementById('mtr_station').style.display = 'block';
	}else{
		document.getElementById('tag_id_11').style.display = 'none';
		document.getElementById('tag_id_12').style.display = 'none';
		//document.getElementById('mtr_station').style.display = 'none';
	}
}
function checkNewProjectForm()
{
	if(document.getElementById('property_name_cn').value == '')
	{
		alert('Please a list fill in the property name in Chinese!');
		return false;
	}
	if(document.getElementById('district_id').value == '')
	{
		alert('Please select the district of the project!');
		return false;
	}
	if(document.getElementById('zone_id').value == '')
	{
		alert('Please select the zone of the project£¡');
		return false;
	}
	if(document.getElementById('street').value == '' && document.getElementById('street_number').value == '' && document.getElementById('street_hao').value == '')
	{
		alert('Project address must have street name, street lane or street number £¡');
		return false;
	}
	var house_type = document.getElementsByName('property_type');
	var bool_type = 0;
	for(var i=0;i<house_type.length;i++)
	{
		if(house_type[i].checked == true)
		{
			bool_type = 1;
		}
		if(house_type[i].checked == true && house_type[i].value == 12 && (document.getElementById('line_num').value == '' || document.getElementById('station_name').value == ''))
		{
			alert('You choose to list the property info of a Metro project, you are required to fill the Metro line and station info!');
			return false;
		}
	}
	if(bool_type == 0)
	{
		alert('Please select category of the project£¡');
		return false;
	}
	
	return true;
}