(function($) { 
  
         // jQuery plugin definition 
         $.fn.TextAreaExpander = function(minHeight, maxHeight) { 
  
                 var hCheck = !($.browser.msie || $.browser.opera); 
  
                 // resize a textarea 
                 function ResizeTextarea(e) { 
  
                         // event or initialize element? 
                         e = e.target || e; 
  
                         // find content length and box width 
                         var vlen = e.value.length, ewidth = e.offsetWidth; 
                         if (vlen != e.valLength || ewidth != e.boxWidth) { 
  
                                 if (hCheck && (vlen < e.valLength || ewidth != e.boxWidth)) e.style.height = "0px"; 
                                 var h = Math.max(e.expandMin, Math.min(e.scrollHeight, e.expandMax)); 
  
                                 e.style.overflow = (e.scrollHeight > h ? "auto" : "hidden"); 
                                 e.style.height = h + "px"; 
  
                                 e.valLength = vlen; 
                                 e.boxWidth = ewidth; 
                         } 
  
                         return true; 
                 }; 
  
                 // initialize 
                 this.each(function() { 
  
                         // is a textarea? 
                         if (this.nodeName.toLowerCase() != "textarea") return; 
  
                         // set height restrictions 
                         var p = this.className.match(/expand(\d+)\-*(\d+)*/i); 
                         this.expandMin = minHeight || (p ? parseInt('0'+p[1], 10) : 0); 
                         this.expandMax = maxHeight || (p ? parseInt('0'+p[2], 10) : 99999); 
  
                         // initial resize 
                         ResizeTextarea(this); 
  
                         // zero vertical padding and add events 
                         if (!this.Initialized) { 
                                 this.Initialized = true; 
                                 $(this).css("padding-top", 0).css("padding-bottom", 0); 
                                 $(this).bind("keyup", ResizeTextarea).bind("focus", ResizeTextarea); 
                         } 
                 }); 
  
                 return this; 
         }; 
  
 })(jQuery); 
  
  
 // initialize all expanding textareas 
 jQuery(document).ready(function() { 
         jQuery("textarea[class*=expand]").TextAreaExpander(); 
 });