Locate all the divs in front of the last div and give them a class.

Edit code and click me	Your Result (Some examples do not work in Google Chrome):
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <script src="http://code.jquery.com/jquery-latest.js"></script> <script> $(document).ready(function(){ $("div:last").prevAll().addClass("before"); }); </script> <style> div { width:70px; height:70px; background:#abc; border:2px solid black; margin:10px; float:left; } div.before { border-color: red; } </style> </head> <body> <div></div> <div></div> <div></div> <div></div> </body> </html>
Edit the code above and click to see the result	www.xhtml.co.il - Try it yourself