I have a js function which is set up to pull values into a <select> when another <select> is changed.
Can anyone tell me how I can also get this to work when the page is initially loaded aswell please?

This is the js code:
Code:
$(document).ready(function() {
	$('#drop_1').change(function(){
      $.get("func.php", {
		func: "drop_1",
		drop_var: $('#drop_1').val()
      }, function(response){
        setTimeout("finishAjax('result_1', '"+escape(response)+"')", 400);
      });
    	return false;
	});
});

function finishAjax(id, response) {
  $('#MyHolder').html(unescape(response));
}
This is the code in the func.php file:

PHP Code:
function getTierOne()
{
    
$result mysql_query("SELECT DISTINCT Make FROM table"
    or die(
mysql_error());

      while(
$tier mysql_fetch_array$result )) 
  
        {
            if(
$tier['Make'] == $_REQUEST['make']) { $mine 'selected="selected"';}    
              if(
$tier['Make'] != $_REQUEST['make']) { $mine '';}        
           echo 
'<option value="'.$tier['Make'].'" '.$mine.'>'.$tier['Make'].'</option>';
        }

}

//**************************************
//     First selection results     //
//**************************************
if($_GET['func'] == "drop_1" && isset($_GET['func'])) { 
   
drop_1($_GET['drop_var']); 
}

function 
drop_1($drop_var)
{  
    include_once(
'db.php');
    
    
$result mysql_query("SELECT DISTINCT Model FROM Used_Stock WHERE Type='4' AND Make='$drop_var' ORDER BY Model ASC"
    or die(
mysql_error());
    
    echo 
'<select name="model" id="model" class="selection" onchange="showTotalArticles()">
          <option value="" selected="selected">All Models</option>'
;

           while(
$drop_2 mysql_fetch_array$result )) 
            {
              echo 
'<option value="'.$drop_2['Model'].'">'.$drop_2['Model'].'</option>';
            }
    
    echo 
'</select> ';
    
//echo '<input type="submit" name="submit" value="Submit" />';