// JavaScript Document

function height(){
  var x = document.getElementById('col1').offsetHeight;
  var y = document.getElementById('col3').offsetHeight;   
  if(x>y){
    document.getElementById('col3').style.height = x - 180 + "px";
  } else {
	  if(x<y)
document.getElementById('col1').style.height = y -26 + "px";   
  }
}