Merge changes from #149

chosen/chosen.css

@@ -1,9 +1,4 @@
 /* @group Base */
-select.chzn-select {
-  visibility: hidden;
-  height: 28px !important;
-  min-height: 28px !important;
-}
 .chzn-container {
   font-size: 13px;
   position: relative;

chosen/chosen.jquery.js

@@ -17,6 +17,9 @@
   $ = jQuery;
   $.fn.extend({
     chosen: function(data, options) {
+      if ($.browser === "msie" && ($.browser.version === "6.0" || $.browser.version === "7.0")) {
+        return this;
+      }
       return $(this).each(function(input_field) {
         if (!($(this)).hasClass("chzn-done")) {
           return new Chosen(this, data, options);

chosen/chosen.proto.js

@@ -693,8 +693,16 @@
     return Chosen;
   })();
   root.Chosen = Chosen;
+  if (Prototype.Browser.IE) {
+    if (/MSIE (\d+\.\d+);/.test(navigator.userAgent)) {
+      Prototype.BrowserFeatures['Version'] = new Number(RegExp.$1);
+    }
+  }
   document.observe('dom:loaded', function(evt) {
     var select, selects, _i, _len, _results;
+    if (Prototype.Browser.IE && (Prototype.BrowserFeatures['Version'] === 6 || Prototype.BrowserFeatures['Version'] === 7)) {
+      return;
+    }
     selects = $$(".chzn-select");
     _results = [];
     for (_i = 0, _len = selects.length; _i < _len; _i++) {

coffee/chosen.jquery.coffee

@@ -7,6 +7,8 @@ $ = jQuery
 
 $.fn.extend({
   chosen: (data, options) ->
+    # Do no harm and return as soon as possible for unsupported browsers, namely IE6 and IE7
+    return this if $.browser is "msie" and ($.browser.version is "6.0" or  $.browser.version is "7.0")
     $(this).each((input_field) ->
       new Chosen(this, data, options) unless ($ this).hasClass "chzn-done"
     )

coffee/chosen.proto.coffee

@@ -574,7 +574,16 @@ class Chosen
 
 root.Chosen = Chosen
 
+# Prototype does not support version numbers so we add it ourselves
+if Prototype.Browser.IE 
+  if /MSIE (\d+\.\d+);/.test(navigator.userAgent)
+    Prototype.BrowserFeatures['Version'] = new Number(RegExp.$1);
+
+
 document.observe 'dom:loaded', (evt) ->
+  # Do no harm and return as soon as possible for unsupported browsers, namely IE6 and IE7
+  return if Prototype.Browser.IE and (Prototype.BrowserFeatures['Version'] is 6 or Prototype.BrowserFeatures['Version'] is 7)
+  
   selects = $$(".chzn-select")
   new Chosen select for select in selects