(function($){$.fn.tabby=function(options){var opts=$.extend({},$.fn.tabby.defaults,options);var pressed=$.fn.tabby.pressed;return this.each(function(){$this=$(this);var options=$.meta?$.extend({},opts,$this.data()):opts;$this.bind('keydown',function(e){var kc=$.fn.tabby.catch_kc(e);if(16==kc)pressed.shft=true;if(17==kc){pressed.ctrl=true;setTimeout("$.fn.tabby.pressed.ctrl = false;",1000);}
if(18==kc){pressed.alt=true;setTimeout("$.fn.tabby.pressed.alt = false;",1000);}
if(9==kc&&!pressed.ctrl&&!pressed.alt){e.preventDefault;pressed.last=kc;setTimeout("$.fn.tabby.pressed.last = null;",0);process_keypress($(e.target).get(0),pressed.shft,options);return false;}}).bind('keyup',function(e){if(16==$.fn.tabby.catch_kc(e))pressed.shft=false;}).bind('blur',function(e){if(9==pressed.last)$(e.target).one('focus',function(e){pressed.last=null;}).get(0).focus();});});};$.fn.tabby.catch_kc=function(e){return e.keyCode?e.keyCode:e.charCode?e.charCode:e.which;};$.fn.tabby.pressed={shft:false,ctrl:false,alt:false,last:null};function process_keypress(o,shft,options){var scrollTo=o.scrollTop;if(o.setSelectionRange)gecko_tab(o,shft,options);else if(document.selection)ie_tab(o,shft,options);o.scrollTop=scrollTo;}
$.fn.tabby.defaults={tabString:String.fromCharCode(9)};function gecko_tab(o,shft,options){var ss=o.selectionStart;var es=o.selectionEnd;if(ss==es){if(shft){if("\t"==o.value.substring(ss-options.tabString.length,ss)){o.value=o.value.substring(0,ss-options.tabString.length)+o.value.substring(ss);o.focus();o.setSelectionRange(ss-options.tabString.length,ss-options.tabString.length);}
else if("\t"==o.value.substring(ss,ss+options.tabString.length)){o.value=o.value.substring(0,ss)+o.value.substring(ss+options.tabString.length);o.focus();o.setSelectionRange(ss,ss);}}
else{o.value=o.value.substring(0,ss)+options.tabString+o.value.substring(ss);o.focus();o.setSelectionRange(ss+options.tabString.length,ss+options.tabString.length);}}
else{var lines=o.value.split("\n");var indices=new Array();var sl=0;var el=0;var sel=false;for(var i in lines){el=sl+lines[i].length;indices.push({start:sl,end:el,selected:(sl<=ss&&el>ss)||(el>=es&&sl<es)||(sl>ss&&el<es)});sl=el+1;}
var modifier=0;for(var i in indices){if(indices[i].selected){var pos=indices[i].start+modifier;if(shft&&options.tabString==o.value.substring(pos,pos+options.tabString.length)){o.value=o.value.substring(0,pos)+o.value.substring(pos+options.tabString.length);modifier-=options.tabString.length;}
else if(!shft){o.value=o.value.substring(0,pos)+options.tabString+o.value.substring(pos);modifier+=options.tabString.length;}}}
o.focus();var ns=ss+((modifier>0)?options.tabString.length:(modifier<0)?-options.tabString.length:0);var ne=es+modifier;o.setSelectionRange(ns,ne);}}
function ie_tab(o,shft,options){var range=document.selection.createRange();if(o==range.parentElement()){if(''==range.text){if(shft){var bookmark=range.getBookmark();range.moveStart('character',-options.tabString.length);if(options.tabString==range.text){range.text='';}else{range.moveToBookmark(bookmark);range.moveEnd('character',options.tabString.length);if(options.tabString==range.text)
range.text='';}
range.collapse(true);range.select();}
else{range.text=options.tabString;range.collapse(false);range.select();}}
else{var selection_text=range.text;var selection_len=selection_text.length;var selection_arr=selection_text.split("\r\n");var before_range=document.body.createTextRange();before_range.moveToElementText(o);before_range.setEndPoint("EndToStart",range);var before_text=before_range.text;var before_arr=before_text.split("\r\n");var before_len=before_text.length;var after_range=document.body.createTextRange();after_range.moveToElementText(o);after_range.setEndPoint("StartToEnd",range);var after_text=after_range.text;var end_range=document.body.createTextRange();end_range.moveToElementText(o);end_range.setEndPoint("StartToEnd",before_range);var end_text=end_range.text;var check_html=$(o).html();$("#r3").text(before_len+" + "+selection_len+" + "+after_text.length+" = "+check_html.length);if((before_len+end_text.length)<check_html.length){before_arr.push("");before_len+=2;if(shft&&options.tabString==selection_arr[0].substring(0,options.tabString.length))
selection_arr[0]=selection_arr[0].substring(options.tabString.length);else if(!shft)selection_arr[0]=options.tabString+selection_arr[0];}else{if(shft&&options.tabString==before_arr[before_arr.length-1].substring(0,options.tabString.length))
before_arr[before_arr.length-1]=before_arr[before_arr.length-1].substring(options.tabString.length);else if(!shft)before_arr[before_arr.length-1]=options.tabString+before_arr[before_arr.length-1];}
for(var i=1;i<selection_arr.length;i++){if(shft&&options.tabString==selection_arr[i].substring(0,options.tabString.length))
selection_arr[i]=selection_arr[i].substring(options.tabString.length);else if(!shft)selection_arr[i]=options.tabString+selection_arr[i];}
if(1==before_arr.length&&0==before_len){if(shft&&options.tabString==selection_arr[0].substring(0,options.tabString.length))
selection_arr[0]=selection_arr[0].substring(options.tabString.length);else if(!shft)selection_arr[0]=options.tabString+selection_arr[0];}
if((before_len+selection_len+after_text.length)<check_html.length){selection_arr.push("");selection_len+=2;}
before_range.text=before_arr.join("\r\n");range.text=selection_arr.join("\r\n");var new_range=document.body.createTextRange();new_range.moveToElementText(o);if(0<before_len)new_range.setEndPoint("StartToEnd",before_range);else new_range.setEndPoint("StartToStart",before_range);new_range.setEndPoint("EndToEnd",range);new_range.select();}}}})(jQuery);
;(function(jQuery){jQuery.fn.extend({elastic:function(){var mimics=['paddingTop','paddingRight','paddingBottom','paddingLeft','fontSize','lineHeight','fontFamily','width','fontWeight'];return this.each(function(){if(this.type!='textarea'){return false;}
var $textarea=jQuery(this),$twin=jQuery('<div />').css({'position':'absolute','display':'none','word-wrap':'break-word'}),lineHeight=parseInt($textarea.css('line-height'),10)||parseInt($textarea.css('font-size'),'10'),minheight=parseInt($textarea.css('height'),10)||lineHeight*3,maxheight=parseInt($textarea.css('max-height'),10)||Number.MAX_VALUE,goalheight=0,i=0;if(maxheight<0){maxheight=Number.MAX_VALUE;}
$twin.appendTo($textarea.parent());var i=mimics.length;while(i--){$twin.css(mimics[i].toString(),$textarea.css(mimics[i].toString()));}
function setHeightAndOverflow(height,overflow){curratedHeight=Math.floor(parseInt(height,10));if($textarea.height()!=curratedHeight){$textarea.css({'height':curratedHeight+'px','overflow':overflow});}}
function update(){var textareaContent=$textarea.val().replace(/&/g,'&amp;').replace(/  /g,'&nbsp;').replace(/<|>/g,'&gt;').replace(/\n/g,'<br />');var twinContent=$twin.html();if(textareaContent+'&nbsp;'!=twinContent){$twin.html(textareaContent+'&nbsp;');if(Math.abs($twin.height()+lineHeight-$textarea.height())>3){var goalheight=$twin.height()+lineHeight;if(goalheight>=maxheight){setHeightAndOverflow(maxheight,'auto');}else if(goalheight<=minheight){setHeightAndOverflow(minheight,'hidden');}else{setHeightAndOverflow(goalheight,'hidden');}}}}
$textarea.css({'overflow':'hidden'});$textarea.keyup(function(){update();});$textarea.live('input paste',function(e){setTimeout(update,250);});update();});}});})(jQuery);