// JavaScript Document

function setTall() {
 if (document.getElementById) {
  // the divs array contains references to each column's div element.  
  // Replace 'center' 'right' and 'left' with your own.  
  // Or remove the last one entirely if you've got 2 columns.  Or add another if you've got 4!
  var divs = new Array(document.getElementById('seis'), document.getElementById('contenedor'), document.getElementById('banner_derecho'));
    
  
  // Let's determine the maximum height out of all columns specified
  var maxHeight = 0;
  for (var i = 0; i < divs.length; i++) {
   if (divs[i].offsetHeight > maxHeight) maxHeight = divs[i].offsetHeight;
    
  }
  
  // Let's set all columns to that maximum height
  for (var i = 0; i < divs.length; i++) {
   divs[i].style.height = maxHeight + 'px';

   // Now, if the browser's in standards-compliant mode, the height property
   // sets the height excluding padding, so we figure the padding out by subtracting the
   // old maxHeight from the new offsetHeight, and compensate!  So it works in Safari AND in IE 5.x
   if (divs[i].offsetHeight > maxHeight) {
    divs[i].style.height = (maxHeight - (divs[i].offsetHeight - maxHeight)) + 'px';
   }
  }
 
 }
}

window.onload = function() {
 setTall();
}

window.onresize = function() {
 setTall();
}