adding column on CMS

[chikuru]

i want to edit the function of the "3Column" function in the CMS area, I want to display 4 columns instead of 3.. Here is the code of the vbcms_content_section_type3:

<vb:if condition="$result_count > 0">
	<vb:each from="contents" key="id" value="content">
		<vb:if condition="($id % 3) == 1">
			<div class="fullwidth">
				<div class="leftcol1<vb:if condition="$id > 3"> cms_separator</vb:if>">
					{vb:raw content}
				</div>
		<vb:else />
			<vb:if condition="($id % 3) == 2">
				<div class="centercol1<vb:if condition="$id > 3"> cms_separator</vb:if>">
					{vb:raw content}
				</div>
			</vb:if>
			<vb:if condition="($id % 3) == 0">
				<div class="rightcol1<vb:if condition="$id > 3"> cms_separator</vb:if>">
						{vb:raw content}
				</div>
			</div>
			</vb:if>
		</vb:if>
	</vb:each>
	<vb:if condition="($result_count % 3) != 0">
		</div>
	</vb:if>
</vb:if>