Sorting An Array Of Records By Value Of Field In Records?

I have written this program:

var scores=[];
function sortScores(scoreRecs){
for(i=0;i<scoreRecs.length;i++)

[code]...

to take an array of variables in calling the function (ie sortScores), place these variables into an empty array("scores"), apply the bubble sort to scores, and then alert scores in sorted form. When I use test values like I have above, where they are all just numbers, this program works perfectly and alerts the "scores" array, correctly sorted. However, what I would like to do is to call the function with an array of records, each containing two fields, and apply the same sort to the array of records, based on the value in the first field of each record.To illustrate, i'd like to be able to call the function thus:

sortScores([{score:0,index:0},{score:2, index:1},{score:1,index:2}]);

and for it to sort the records in descending order of the value of the "score" field. So the above call would alert:

[{score:2,index:1},{score:1,index:2},{score:0,index:0}]

however, i'm not sure how i'd reference the numeric part of the f1 of each record in the sort?