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return;selection=(selection==''?'Sub sub heading':selection);this.replaceSelection('### '+selection+'\n');},{className:'markdown_h3_button'});toolbar.addButton('HR',function(){this.insertAfterSelection('\n\n---\n\n');},{className:'markdown_hr_button'});toolbar.addSeparator();toolbar.addButton('Help',function(){window.open('http://daringfireball.net/projects/markdown/dingus');},{className:'markdown_help_button'});var tab_forward=function(){caretInfo=textarea.getCaretInfo($(textarea_id));var whole_text=textarea.getValue();var following_text=whole_text.slice(caretInfo.caret,whole_text.length);var next_pos_start=following_text.search(/\|[^\n\-]/)+1;following_text=following_text.slice(next_pos_start,following_text.length);var next_pos_end=next_pos_start+following_text.search(/\|/);if(next_pos_end==-1)
return;var diff=caretInfo.end-caretInfo.start;var caretInfo_next={start:caretInfo.start+next_pos_start+diff,end:caretInfo.start+next_pos_end+diff,caret:caretInfo.start+next_pos_end+diff};textarea.setCaretInfo($(textarea_id),caretInfo_next);}
var tab_backward=function(){caretInfo=textarea.getCaretInfo($(textarea_id));var whole_text=textarea.getValue();var following_text=whole_text.slice(0,caretInfo.caret).split('').reverse().join('');var next_pos_start=following_text.search(/\|/)+1;following_text=following_text.slice(next_pos_start,following_text.length);var next_pos_end=next_pos_start+following_text.search(/[^\n\-]\|/);if(next_pos_end==-1)
return;var diff=caretInfo.end-caretInfo.start;var caretInfo_next={start:caretInfo.start-next_pos_start+diff,end:caretInfo.start-next_pos_end+diff,caret:caretInfo.start-next_pos_end+diff};textarea.setCaretInfo($(textarea_id),caretInfo_next);var before_cell=whole_text.slice(0,caretInfo_next.caret).split('').reverse().join('');var after_cell=whole_text.slice(caretInfo_next.caret,whole_text.length);var word_begin=before_cell.search(/\|/);var word_end=after_cell.search(/\|/);var caretInfo_final={start:caretInfo_next.caret-word_begin,end:caretInfo_next.caret+word_end,caret:caretInfo_next.caret+word_end}
textarea.setCaretInfo($(textarea_id),caretInfo_final);}
var text_emphasize=function(){textarea.smartWrap('_','_');return false;}
var text_bold=function(){textarea.smartWrap('**','**');return false;}
new HotKey('i',text_emphasize,{element:$('textarea_id'),ctrlKey:true});new HotKey('b',text_bold,{element:$(textarea_id),ctrlKey:true});new HotKey('tab',tab_forward,{element:$('textarea_id')});new HotKey('tab',tab_backward,{element:$('textarea_id'),shiftKey:true});},enhance:function(){Control.TextArea.ToolBar.addMethods({addSeparator:function(){var li=document.createElement('li');li.className='separator';this.container.appendChild(li);return;}});Control.TextArea.addMethods({wrapSelectionStayInside:function(before,after){text=before+this.getSelection()+after
var scroll_top=this.element.scrollTop;if(!!document.selection){this.element.focus();var range=(this.range)?this.range:document.selection.createRange();range.text=text;range.select();}else if(!!this.element.setSelectionRange){var selection_start=this.element.selectionStart;this.element.value=this.element.value.substring(0,selection_start)+text+this.element.value.substring(this.element.selectionEnd);this.element.setSelectionRange(selection_start+text.length,selection_start+text.length-after.length);}
this.doOnChange();this.element.focus();this.element.scrollTop=scroll_top;},stripLastNewLines:function(s){while((s.substring(s.length-1,s.length)=="\n")||(s.substring(s.length-1,s.length)=="\r"))
s=s.substring(0,s.length-1);return s;},getCaretInfo:function(textarea){var result={start:0,end:0,caret:0};if(navigator.appVersion.indexOf("MSIE")!=-1){if(textarea.tagName.toLowerCase()=="textarea"){var range1=document.selection.createRange();var range2=range1.duplicate();var offset=textarea.value.length-(stripLastNewLines(textarea.value)).length;range2.moveToElementText(textarea);range2.setEndPoint('StartToEnd',range1);result.end=textarea.value.length-range2.text.length-offset;range2.setEndPoint('StartToStart',range1);result.start=textarea.value.length-range2.text.length-offset;result.caret=result.end;}else{var range1=document.selection.createRange();var range2=range1.duplicate();result.start=0-range2.moveStart('character',-100000);result.end=result.start+range1.text.length;result.caret=result.end;}}else{result.start=textarea.selectionStart;result.end=textarea.selectionEnd;result.caret=result.end;}
if(result.start<0)
result={start:0,end:0,caret:0};return result;},setCaretInfo:function(textarea,caretInfo){if(textarea.setSelectionRange){textarea.focus();textarea.setSelectionRange(caretInfo.start,caretInfo.end);}
if(textarea.createTextRange){var range=textarea.createTextRange();range.collapse(true);range.moveEnd('character',caretInfo.end);range.moveStart('character',caretInfo.start);range.select();}},smartWrap:function(before,after){if(this.getSelection()==""){this.wrapSelectionStayInside(before,after);}
else{this.wrapSelection(before,after);}}});}});Markdown.Textarea.observe=function(){$$('textarea.markdown_editor').each(function(textarea){if(textarea.previous()==null||textarea.previous().id!=='markdown_toolbar'){new Markdown.Textarea(textarea);}});}