Image Loading Issue in JSP

We are loading some images in JSP from the CSS file, It is having the functionlity of changing the images on mouse over. Everything is working fine when we load first time. after we refresh the page the images are not loding properly and when we mouse over on images the flickering is happiening in IE6.0. Is any one have faced this problem,if so please send me the solution or suggestion for this issue.

[411 byte] By [raghu_munia] at [2007-10-3 4:26:21]