I am having troubles where some of my pop ups have stopped working. Instead of the pic appearing in a new window at the specified size, the new window just says 'untitled' and is regular size. I have this code on the button:

on (release) {
getURL("javascript: MM_openBrWindow('brace1.html','loading','width=300 ,height=450')", "_blank");
}
Is there any hidden code in the html file/s that I may have overwritten, or can you think of any other reason why they are all not working?