function getDate(ID)
{
	yarr = Array( 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31, 29);
	obj_y = document.getElementById('inquiry_kengaku_y') ;
	obj_m = document.getElementById('inquiry_kengaku_m') ;
	obj_d = document.getElementById('inquiry_kengaku_d') ;
	s_index_y = obj_y.selectedIndex ;
	s_index_m = obj_m.selectedIndex ;
	s_index_d = obj_d.selectedIndex ;
	s_val_y = new Number(obj_y.options[s_index_y].value.replace(/年/i,""));
	s_val_m = new Number(obj_m.options[s_index_m].value.replace(/月/i,""));
	s_val_d = new Number(obj_d.options[s_index_d].value.replace(/日/i,""));
	
	for( i=0 ; i<obj_d.options.length ; i++ )
	{
		obj_d.options[0] =null;
	}
	if( !(s_val_y % 4) && s_val_m == 2)
	{
		for( i=0 ; i<29 ; i++ )
		{
			obj_d.options[i] = new Option(i+1+'日',i+1+'日');
		}
	}else
	{
		for( i=0 ; i<yarr[s_val_m-1] ; i++ )
		{
			obj_d.options[i] = new Option(i+1+'日',i+1+'日');
		}
	}
}