swfupload init with addOnloadEvent - swfupload

Question

i am using an addOnloadEvent(initSwfUpload) function to init the
swfupload.
Here are my functions
function addOnloadEvent(fnc){
if ( typeof window.addEventListener != "undefined" )
window.addEventListener( "load", fnc, false );
else if ( typeof window.attachEvent != "undefined" ) {
window.attachEvent( "onload", fnc );
}
else {
if ( window.onload != null ) {
var oldOnload = window.onload;
window.onload = function ( e ) {
oldOnload( e );
window[fnc]();
};
}
else
window.onload = fnc;
}
}
function initSwfUpload()
{
var swf = new SWFUpload({
// Backend Settings
upload_url: "../../../upload.php",
...
....
})
}
Its working fine but now i need to use the addPostParam(name, value)
but swf is not available.
Here is the code
<script type="text/javascript">
addOnloadEvent(initSwfUpload);
swf.addPostParam('c','1');
</script>
I get the message swf is undefined.
Is possible using the addOnloadEvent approach to achieve the above.
For several reasons i dont want ro use the classic swfupload init
var swfu;
window.onload = function () {
swfu = new SWFUpload({
.......
Thanks

Answer 1

You need to define swfu object outside function first to make it global.
function addOnloadEvent(fnc){
if ( typeof window.addEventListener != "undefined" )
window.addEventListener( "load", fnc, false );
else if ( typeof window.attachEvent != "undefined" ) {
window.attachEvent( "onload", fnc );
}
else {
if ( window.onload != null ) {
var oldOnload = window.onload;
window.onload = function ( e ) {
oldOnload( e );
window[fnc]();
};
}
else
window.onload = fnc;
}
}
var swf;
function initSwfUpload()
{
swf = new SWFUpload({
// Backend Settings
upload_url: "../../../upload.php",
...
....
})
}
Then you can use this.
<script type="text/javascript">
addOnloadEvent(initSwfUpload);
swf.addPostParam('c','1');
</script>