URL's of graphs in IE7

Hello,

I have an application developed in PDK that shows a URL's of graphs that come from BW,the application work well under IE6, but with IE7 no. The URL shows the graph under IE7 when URL is executed in type URL iview and when load directly in a windows browser, but within the application pdk that is executed in iview of the Portal does not work. The application this done in Webdynpro under SP19 and either does not work the URL's of BW under IE7.

The Portal this in the SP 19.

They have some idea to solve this problem?