Form java + php

[yuri1982]

Ciao a tutti,
avrei bisogno di un aiutino visto che non sono molto esperto!!!!
Ho creato nel database questa tabella:

ALTER TABLE `jos_properties_products` ADD `extra41` VARCHAR( 255 ) NOT NULL ; 

Poi ho creato il form:

<select name="extra11" style="width:50px;"> 
               <option <?php echo $select0;?> value="0"><?php echo JText::_( '0_extra41' ); ?></option>
            <option <?php echo $select1;?> value="1"><?php echo JText::_( '1_extra41' ); ?></option>
            <option <?php echo $select2;?> value="2"><?php echo JText::_( '2_extra41' ); ?></option>
            <option <?php echo $select3;?> value="3"><?php echo JText::_( '3_extra41' ); ?></option>
            <option <?php echo $select4;?> value="4"><?php echo JText::_( '4_extra41' ); ?></option>
            <option <?php echo $select5;?> value="5"><?php echo JText::_( '5_extra41' ); ?></option>
            <option <?php echo $select6;?> value="6"><?php echo JText::_( '6_extra41' ); ?></option>
         </select>

e poi il JS

    <script language="javascript" type="text/javascript">
<!--
function submitbutton(pressbutton) {
    var form = document.adminForm;
    /*var type = form.type.value;*/

    if (pressbutton == 'cancel') {
        submitform( pressbutton );
        return;
    }
    if ( document.getElementById('name').value == "") {
        alert( "Item must have a Title" );
    }
            if ( document.getElementById('extra41').value == "0") {
        alert( "Item must have a Title" );
    }

                else if( document.getElementById('parent').value == 0 ){
         alert( "Please select a Category" );
    }             
                else if( document.getElementById('type').value == 0 ){
         alert( "Please select a Type" );
    } 
                else if( document.getElementById('cyid').value == 0 ){
         alert( "Please select a Country" );
    } 
                else if( document.getElementById('sid').value == 0 ){
         alert( "Please select a State" );
    } 
                else if( document.getElementById('lid').value == 0 ){
         alert( "Please select a Locality" );
    } 
    
                 else {
        submitform( pressbutton );
    }
}
//-->
</script> 

Come mai non mi da l'alert?non succede niente!!!!
Spero mi possiate aiutare!

YURI