function fixH(one,two) {
if (document.getElementById(one)) {
var lh=document.getElementById(one).offsetHeight;
var rh=document.getElementById(two).offsetHeight;
var nh = Math.max(lh, rh);
document.getElementById(one).style.height=nh+"px";
document.getElementById(two).style.height=nh+"px";
}
}

//this does it for three
function sortNum(a,b) { return b-a}
function fixH2(one,two,three) {
if (document.getElementById(one)) {
var obj=new Array(3);
var option=[one,two,three];
for(var i=0; i<option.length; i++) {
document.getElementById(option[i]).style.height="auto";
obj[i]=document.getElementById(option[i]).offsetHeight;
nh=obj.sort(sortNum);
}
nh1=nh.splice(1,2);
for(var i=0; i<option.length; i++) {
document.getElementById(option[i]).style.height=nh+"px";
}
}
}
//

window.onload=function(){
fixH('block-left','block-right');
fixH2('block-left','block-right','maincontent-block');
}

var maxHeight = function(classname) {
    var divs = document.getElements(classname);
    var max = 0;
    divs.each(function(div) {
        max = Math.max(max, div.getSize().size.y);
    });
	divs.setStyle('height', max);
    return max;
};

window.addEvent('load', function() { 
	if (!window.ie6) {
		maxHeight('#row2 .block');
		maxHeight('#row3 .block');
	};
	maxHeight('div.main-height');
});