Make Container.height = Right_Column.height

it's simple as that :)

The column on my right changes dynamically, and since the height of the left column is set to 100%, I thought it would be good to dynam开发者_JAVA百科ically modify the height of the container depending on what the height of the Right_Column is. Any tips? Thanks :)

You could do something like this, if I understand the question correctly

var h = $('#left').height();
$('#right').css('height', h + 'px');

Example: http://jsfiddle.net/jasongennaro/KrhAP/2/

Is that what you wanted?

EDIT

As per your comment,

just add overflow:hidden; to

.container {
    width: 500px;
    background-color: yellow;
    overflow:hidden;
}

and change your jQuery to be this, placing it inside the click()

$("button").click(function(){
    $("#right").html("adsd<BR>adsd<BR>adsd<BR>adsd<BR>adsd<BR>adsd<BR>adsd<BR>adsd<BR>adsd<BR>adsd<BR>adsd<BR>adsd<BR>adsd<BR>");

  var h = $('#right').height();
  $('#left').css('height', h + 'px');

});

NB: I also had to switch the #right and #left from my original after you changed the fiddle.

Example 2: http://jsfiddle.net/jasongennaro/wXyDq/2/

$(document).ready(function({
    var x = $('#primary').height();
    $('#sidebar').css('height', x);
});

This works for me, hope it helps.