Just insert a snippet of code around your upload link which look like this:
<xsl:if test="ddwrt:IfHasRights(2)"> <!-- Display upload link or not --> </xsl:if>
If you want to use other permissions like delete or anything, you just have to change the number at IfHasRights(XX). See the following table.
..:: I LIKE SHAREPOINT ::..
He is Consultant for SharePoint Solutions for collaboration, communication and business processes. He provides his customers applications based on standard features as well as development or combining the power of several microsoft tools like Dynamics CRM. In his free time he tries to collect tipps and worthy experience in this blog.