部署报告后，不显示Reporting Services图像

I have a SSRS 2005 report that has a number of images in it. The way that I have the images included is I have an image object with the URL set in the value property. The actual images are hosted by an IIS virtual directory on the same server. I'm doing it this way because I need to dynamically change the image source using an expression depending on the data within the report. I have a SSRS 2005 report that has a number of