[jQuery] Functions

I have some code seperated by script:
$(document).ready(function(){
code in here....
function thisismyfunction(){
}
});
then later on i have
$(document).ready(function(){
thisismyfunction()
});
code in here with a call to the function above, but because its
seperated it will not call the above function is there a way I can
reference the a function outside in another declaration etc
many thanks si