function fancyRules() { 
  if (!document.getElementsByTagName) return; 
	  var hr = document.getElementsByTagName("hr");
  for (var i=0; i<hr.length; i++) { 
    var newhr = hr[i]; 
    var wrapdiv = document.createElement('div');
    wrapdiv.className = 'line';  
    newhr.parentNode.replaceChild(wrapdiv, newhr);  
    wrapdiv.appendChild(newhr);  
  } 
 } 

window.onload = fancyRules;