/*
  Function to open links in a new window based on rel="external"
*/
function externalLinks() {
  if (!document.getElementsByTagName) return; 
  var anchors = document.getElementsByTagName("a"); 
  for (var i=0; i<anchors.length; i++) { 
    var anchor = anchors[i]; 
    if (anchor.getAttribute("href") && anchor.getAttribute("rel") == "external") 
      anchor.target = "_blank"; 
  } 
}

/*
	tableruler()
	written by Chris Heilmann for alistapart.
	enables a rollover of rows for each table with the classname "hlrows"
*/

function tableruler()
{
	if (document.getElementById && document.createTextNode)
	{
		var tables=document.getElementsByTagName('table');
		for (var i=0;i<tables.length;i++)
		{
			if(tables[i].className=='ruler')
			{
				var trs=tables[i].getElementsByTagName('tr');
				for(var j=0;j<trs.length;j++)
				{
					if(trs[j].parentNode.nodeName=='TBODY')
					{
						trs[j].onmouseover=function(){this.className='ruled';return false}
						trs[j].onmouseout=function(){this.className='';return false}
					}
				}
			}
		}
	}
}