File manager in modules

echo '<script type="text/javascript">var modVariables = [];
function setVariableModified(fieldName){
    var i, isDirty, mv = modVariables;
    for(i=0;i<mv.length;i++){
        if (mv[i]==fieldName) {
            isDirty=true;
        }
    }
    if (!isDirty) {
        mv[mv.length]=fieldName;
        var f = document.forms[\'mutate\'];
        f.variablesmodified.value=mv.join(",");
    }
}

function setLink(lId) {
    if (!allowLinkSelection) {
        window.location.href="index.php?a=3&id="+lId;
        return;
    }
    else {  
            documentDirty=true;
            document.mutate.ta.value=lId;
    }
}

// END ADDED BY S BRENNAN

// Added for RTE selection
function changeRTE(){
    var whichEditor = document.getElementById(\'which_editor\');
    if (whichEditor){
        for (var i=0; i<whichEditor.length; i++){
            if (whichEditor[i].selected){
                newEditor = whichEditor[i].value;
                break;
            }
        }
    }
    var dropTemplate = document.getElementById(\'template\');
    if (dropTemplate){ 
        for (var i=0; i<dropTemplate.length; i++){
            if (dropTemplate[i].selected){
                newTemplate = dropTemplate[i].value;
                break;
            }
         }          
    }

    documentDirty=false;
    document.mutate.a.value = 27;
    document.mutate.newtemplate.value = newTemplate;
    document.mutate.which_editor.value = newEditor;
    document.mutate.submit();
}

function resetParameters() {
    document.mutate.params.value = "";
    lastmod[lastsp]="";
    showParameters();
}
</script>';


include_once($modx->config['base_path'].'manager/includes/tmplvars.inc.php');		  
		  
$event_output = $modx->invokeEvent("OnRichTextEditorInit", array('editor'=>$modx->config['which_editor'], 'elements'=>array('tvmailMessage')));
		
if(is_array($event_output)) {
	$editor_html = implode("",$event_output);
}
// Get HTML for the textarea, last parameters are default_value, elements, value
$rte_html = renderFormElement('richtext', 'mailMessage', '', '', $newsletter);

echo $rte_html;
echo $editor_html;

// MY MOD: renders input field and button
echo renderFormElement('image', 'product_main_img', '', '', '', '');