this.data.sort(function(a , b)
{
    if(isNaN(a[col]) || isNaN(b[col]))
    {
        var temp = new Array(a[col].toUpperCase() , b[col].toUpperCase());

        var filter = new RegExp(/W/g);
        temp[0] = temp[0].replace( filter , "" );
        temp[1] = temp[1].replace( filter , "" );
        temp.sort();

        if(temp[0] == a[col].toUpperCase() && temp[1] == b[col].toUpperCase())
        {
            return -1;
        }
        else
        {
            return 1;
        }
    }
    else
    {
        return a[col] - b[col];
    }
});

this.data = new Array('9.0','10.1','10.2 Beta 1','9.0','11.0 Beta 1');

'9.0','11.0 Beta 1','9.0','10.1',...