Apex Escaping html

When attempting to output some generated HTML generated from this apex class, it gets escaped, which makes it unusable, since this page is supposed to serve the HTML to another page.

CONTROLLER
-------------------
    public static PageReference createFileTree()
    {
        string thisDir = '0';
        folderTreeHtml = '<ul class="jqueryFileTree" style="display: none;">';
        if(!ApexPages.CurrentPage().getParameters().containsKey('dir'))
        {
            thisDir = ApexPages.CurrentPage().getParameters().get('dir');
        }

        BoxObject.BoxResponse folders = getAccountTree(thisDir);

        for(BoxObject.BoxFolder folder : folders.folders)
        {
            folderTreeHtml += '<li class="directory collapsed"><a href="#" rel="'+thisDir+'/'+ folder.id+'"> '+folder.name+'</a></li>';
        }
        folderTreeHtml += '</ul>';

        return null;
    }


PAGE
------------------------
<apex:page controller="quotaTest" action="{!respondentCanSchedule}"
	contentType="application/x-JavaScript; charset=utf-8"
	showHeader="false" standardStylesheets="false" sidebar="false">
{!result}
</apex:page>