function up(obj)
{
   val = parseInt(document.getElementById(obj).value);
   if(val >= 0) new_val = val + 1;
   else new_val = 0;
   document.getElementById(obj).value = new_val;
}

function down(obj)
{
   val = parseInt(document.getElementById(obj).value);
   if(val >= 0) new_val = val - 1;
   else new_val = 0;
   if(new_val < 0) new_val = 0;
   document.getElementById(obj).value = new_val;
}

function showReturnField()
{
   if(document.order_frm.organization.value != '') document.getElementById('return_date').style.display = 'block';
   else document.getElementById('return_date').style.display = 'none';
}