Need To Upload files with PHP and Ajax

[itpvision]

Hello,
I have a registration page, it is processed to a php script through ajax and javascript,
The script worked until a input type file is involved

var params = "username=" + encodeURI(document.getElementById("usernamee").value)+
"&password=" + encodeURI(document.getElementById("passwordd").value)+
"&name=" + encodeURI(document.getElementById("name").value)+
"&pic=" + pik +
;

As you may see,the value retrived from the input type file with id and name as pic, this will send a usual $POST['pic'] , while I need to Process $FILE['pic'];
How can I send the value of a file

[jazz_snob]

You cannot access the file system on the user's computer with javascript. You have to use a hidden iframe. Google around for examples:

here's one:
http://www.openjs.com/articles/ajax/ajax_file_upload/

For debugging sanity you might want to write yourself a logfile until you get the kinks worked out. Just a suggestion.