jQuery function is not called when script src is added to head - php

Question

I'm a bit of a newbie with sources etc and I took it for granted that I could simply add the script src to the header and then add as many scripts or functions as I wanted after that. For the most part this is working fine but now I hav an issue that I cannot solve.
I can either have one script running or the other, both will not work in harmony no matter how many different permutations I've tried. I'm sure there's an easy fix or something I'm missing entirely. I had a look online for an idiot's guide but didn't find anything of use.
The two function scripts are in different places. One is in the head and called from the body of the HTML pages, the other is in an include which is added to every page for dynamic links.
This loads everything Except what is within the body
<!--Creation and hiding of div to allow images load-->
<script src="http://code.jquery.com/jquery-1.10.1.min.js"></script>
<script src="http://code.jquery.com/jquery-migrate-1.2.1.min.js"></script>
<script src="../js/helperFunctions.js"></script>
<!-- jQuery (required) -->
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.8/jquery.min.js"></script>
<script>window.jQuery || document.write('<script src="../js/jquery.min.js"><\/script>')</script>
<!-- Syntax highlighting -->
<link rel="stylesheet" href="../mainCSS/prettify.css" media="screen">
<script src="../js/prettify.js"></script>
<!-- AnythingSlider -->
<link rel="stylesheet" href="../mainCSS/anythingslider.css">
<script src="../js/jquery.anythingslider.js"></script>
<script>
$(function(){
prettyPrint script here;
</script>
<script>
$(function(){
slider script here
</script>
Whilst this loads the body script but none of the others.:
<!-- jQuery (required) -->
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.8/jquery.min.js"></script>
<script>window.jQuery || document.write('<script src="../js/jquery.min.js"><\/script>')</script>
<!-- Syntax highlighting -->
<link rel="stylesheet" href="../mainCSS/prettify.css" media="screen">
<script src="../js/prettify.js"></script>
<!-- AnythingSlider -->
<link rel="stylesheet" href="../mainCSS/anythingslider.css">
<script src="../js/jquery.anythingslider.js"></script>
<script>
$(function(){
prettyPrint script here;
</script>
<script>
$(function(){
slider script here
</script>
<script src="http://code.jquery.com/jquery-1.10.1.min.js"></script>
<script src="http://code.jquery.com/jquery-migrate-1.2.1.min.js"></script>
<script src="../js/helperFunctions.js"></script>
I then tried putting the script src in the include, including the src twice and lots of other stupid senseless ideas.
If anyone could help it'd be great! Many thanks

Answer 1

Your include jQuery like three times in this code. i'm not sure if thats the problem but it ain't the solution
// jquery from jquery.com
<script src="http://code.jquery.com/jquery-1.10.1.min.js"></script>
<script src="http://code.jquery.com/jquery-migrate-1.2.1.min.js"></script>
<!-- jQuery (required) --> // jQuery from google
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.8/jquery.min.js"></script>
<script>window.jQuery || document.write('<script src="../js/jquery.min.js"><\/script>')</script>
// both of these are expendable
this might cause a conflict since the last one to be included is an older version of the library. you only need only inclusion. I'm assuming your using migrate because you have older jQuery code running in your scripts.
CODE ERROR
<script>
$(function(){ // syntax error
prettyPrint script here;
</script>
<script>
$(function(){ // same error
slider script here
</script>
you have syntax errors here, and any script that comes after this code will not run or work.

Answer 2

I had a function in one f the scripts that was returning an error. That seemed to be halting the est of the code. -.-
Also only have one instance of jquery in the head now.