 
					
				
		
Like this:
<form>
  <label>Using half of timepicker</label>
  <description>Using half of timepicker</description>
  <fieldset autoRun="true" submitButton="false">
    <input type="time" token="time_tok1" searchWhenChanged="true">
      <label>Chart Timespan/Width</label>
      <default>Last 24 hours</default>
    </input>
  </fieldset>
  <row>
      <chart>
        <title>Using earliest only</title>
        <searchString>earliest=$time_tok1.earliest$ latest=now() Your Search Here</searchString>
      </chart>
  </row>
  <row>
      <chart>
        <title>Using latest only</title>
        <searchString>earliest=0 latest=$time_tok1.latest$ Your Search Here</searchString>
      </chart>
  </row>
</form>
Uhh...could you clarify what you want to do a bit more please?
