/***********************************************************************
/* It is called like this:
/* $("#cont-pri,#cont-sec,#hleft,#hright,#features,#snw").equalHeights();
/* The jQuery function returns an object containing only the elements found, 
/* so you can include identifiers that are not on every page and the function 
/* still works. On the RNZ site there are some divs on the home page that do 
/* not appear on other pages, but require the equal heights treatment. This 
/* means the call above works on any page without generating errors.
/* http://richardhulse.blogspot.com/2008/11/equal-height-columns-with-jquery.html
*******************************************************************/
jQuery.fn.equalHeights=function() {
var maxHeight=0;
this.each(function(){
 if (this.offsetHeight>maxHeight) {maxHeight=this.offsetHeight;}
});
this.each(function(){
 $(this).height(maxHeight + "px");
 if (this.offsetHeight>maxHeight) {
  $(this).height((maxHeight-(this.offsetHeight-maxHeight))+"px");
 }
});
};