String.prototype.trim = function(){return this.replace(/(^[ |กก]*)|([ |กก]*$)/g, "");}
function $(s){return document.getElementById(s);}
function $$(s){return document.frames?document.frames[s]:$(s).contentWindow;}
function $c(s){return document.createElement(s);}
function swap(s,a,b,c){$(s)[a]=$(s)[a]==b?c:b;}
function exist(s){return $(s)!=null;}
function dw(s){document.write(s);}
function hide(s){$(s).style.display=$(s).style.display=="none"?"":"none";}
function isNull(_sVal){return (_sVal == "" || _sVal == null || _sVal == "undefined");}
function removeNode(s){if(exist(s)){$(s).innerHTML = '';$(s).removeNode?$(s).removeNode():$(s).parentNode.removeChild($(s));}}
function isIE(){return BROWSER.indexOf('ie') > -1;}
function setCopy(_sTxt){try{clipboardData.setData('Text',_sTxt)}catch(e){}}
function output(_sHtml, _box){var oOutput = typeof(_box) == "object" ? _box : $(_box);oOutput.innerHTML = _sHtml;}
function hideList(_sId,_sStr,_iBegin,_iEnd,_sShow){for(var i = _iBegin; i <= _iEnd; i++)if(exist(_sId + i)){$(_sId + i).style.display = _sStr;_sStr == 'none' ? $(_sShow + i).className = 'down' : $(_sShow + i).className = 'up'}}