function $()
{
    var elements = new Array();

    for (var i=0; i < arguments.length; i++)
    { 
        var element = arguments[i]; 
        if (typeof element == 'string') element = document.getElementById(element); 
        if (arguments.length == 1) return element; 
        elements.push(element); 
    }

    return elements; 
}

var BoxHeights =
{
    maxh:  0,
    minh:  450,
    boxes: Array(),
    num:   0,

    equalise: function()
    {
        this.num = arguments.length;
        for (var i=0; i < this.num; i++) if (!$(arguments[i])) return;
        this.boxes = arguments;
        this.maxheight();
        for (var i=0; i < this.num; i++) $(arguments[i]).style.height = Math.max(this.minh, this.maxh) + "px";
    },

    maxheight: function()
    {
        var heights = new Array();
        for (var i=0;i<this.num;i++)
        {
            if (navigator.userAgent.toLowerCase().indexOf('opera') == -1)
            {
                heights.push($(this.boxes[i]).scrollHeight);
            } else {
                heights.push($(this.boxes[i]).offsetHeight);
            }
        }

        heights.sort(this.sortNumeric);
        this.maxh = heights[this.num-1];
    },

    sortNumeric: function(f,s)
    {
        return f-s;
    }
}

window.onload = function()
{
    BoxHeights.equalise('left','content','right');
}