I am facing a strange problem in joomla 2.5. I have a joomla website in which i have integrated my php project. We created a article in article manager in joomla and gave the path of our index.php in it. Our php project was looking fine in IE (7,8,9) browser. Then we created the same article in K2 extension and when we saw it in IE browser the UI of our php project got disturbed. We commented the lines <file condition=”ie”>css/template-ie.css</file> , <file condition=”ie 7″>css/template-ie7.css</file> in pluginssystemjat3jat3base-themesdefaultetclayoutsdefault.xml as we are using JAT3 templates and the UI looked proper. I want to know the use of this file condition in default.xml as it is not affecting anything,also all other articles are looking proper after commenting.