index of arguments (indexOf("#"))

[barracuda]

Hello, I am trying to figure out the commonly used functions for image manipulation. I am having a problem with:
var a = MM_preloadImages.arguments;
if(a[i].indexOf("#")!=0) /* i is an iterator */

Is this just returning the index of the string "#", or is there some special function for the symbol "#" ?

I can supply the whole function if needed.

Thank you.

[glenngv]

It looks for the index position of the string # in the function arguments. I guess that the passed arguments are URLs that may contain the hash symbol #

[barracuda]

index of arguments (indexOf("#&quot)

Thank you !
Have a nice day.