<img src="" id="mycode" style="height:expr/**/ession(alert ('Hello!')); width:expr/**/ession(document.all.mycode.style.height='0px')" />
the code above is work on my friendster, that code result is alert message "Hello!"but i don't understand why/how is it work, so anyone please, tell meand when i use another javascript using format like that code it's doesn't work, how could?thanks before