jQuery Function is not working on page refresh in firefox 14

[vikram1vicky]

Hi,

Following function is working fine when we load page 1st time, but not working when we refresh the page in Firefox (but working fine in Chrome)

function start() {
        getXY();
        rndmX = x, rndmY = y;
        snake.Body.unshift([rndmX,rndmY]);
        resetInterval();            
        direction = snake.dir[Math.round(Math.random()*3)];
        getFood();        
        enable('#restart');
        $('#restart').css({background:'#9B3378'});
        enable('#pause');
        $('#pause').css({background:'#E09926'});
        enable('#stop');
        $('#stop').css({background:'#AD4343'});
        cnvs.focus();
        disable('#start');
        $('#score').html(score);
    }

Following are the functions being called in above functions:

function getRN(max) {
        var n, mod;
        n = Math.round(Math.random()*max);
        mod = n%grid;
        n = n - mod;
        n = n >max?max:n;
        return n;        
    }
    
    function getXY() {
        x = getRN(maxX);
        y = getRN(maxY);
        return x,y;
    }

function resetInterval() {
        clearInterval(interval);
        interval = 0
        interval = setInterval(moveSnake, snake.speed);
    }

Please help ... Thank you in advance