I'm trying to play a powerpoint from a cd rom using a form on a webpage. I've done it in flash by having a drop down for the drive letter and using the following code:

on (press) {
filename = "file:///"+Drive+"/new_const.ppt";
}


on (release) {
getURL (filename, "_blank");
}

Now, I've got my form with the drop down for the drive letters and a button, but I'm not sure how to get this going in javascript. Any help is greatly appreciated!