[lord2kim]

STyLe, как вариант

$(document).ready(function() {
 function setEqualHeight(columns)
 {
 var tallestcolumn = 0;
 $.each(columns, 
 function(i)
 {
 currentHeight = (i == 0 ? $(this).height() - 250 : $(this).height());
 if(currentHeight > tallestcolumn)
 {
 tallestcolumn  = currentHeight;
 }
 }
 );
 //columns.height(tallestcolumn);
 }
 setEqualHeight(["#bar1","#bar2","#bar3","#bar99"]);
});