JavaScript in Child Theme

Hi,
I was wondering how to insert <script type=”text/JavaScript”> correctly in wordpress child theme.

I was pasting the code into new style.css by using notepad++ and the format looks like as below. However, it doesn’t work. Could someone take a look? Thank you very much!

/*
<script type=”text/JavaScript”>
//courtesy of BoogieJack.com
function killCopy(e){
return false
}
function reEnable(){
return true
}
document.onselectstart=new Function (“return false”)
if (window.sidebar){
document.onmousedown=killCopy
document.onclick=reEnable
}
</script>
*/