I was finally able to capture the error and found that Firefox (for some reason) does not recognize my form -->f1. I took the original coded form and put it in a div and for some reason it's not able to recognize it. This is the error message from Firebug, "f1 is not defined
str = checkSpecial( f1.itext.value );"
Anyway, thank for your time and effort I really appreciate it.