function equalize() {

 var left=document.getElementById("main-holder");
 var right=document.getElementById("r-c");
 var main=document.getElementById("main-content");

if( (right.offsetHeight - 377)>left.offsetHeight) {
	left.style.height=(right.offsetHeight - 377)+"px";
	main.style.height = left.style.height;
}
else {
  right.style.height=(left.offsetHeight + 357)+"px";
  main.style.height = left.offsetHeight;
 }
}
onload=equalize;