function replaceText(el,text){if(el!=null){clearText(el);var newNode=document.createTextNode(text);el.appendChild(newNode);}}
function clearText(el){if(el!=null){if(el.childNodes){for(var i=0;i<el.childNodes.length;i++){var childNode=el.childNodes[i];var delChild=el.removeChild(childNode);delChild=null;}}}}
function getText(el){var text="";if(el!=null){if(el.childNodes){for(var i=0;i<el.childNodes.length;i++){var childNode=el.childNodes[i];if(childNode.nodeValue!=null){text=text+ childNode.nodeValue;}}}}
return text;}
function LTrim(str){for(var k=0;k<str.length&&str.charAt(k)<=" ";k++);return str.substring(k,str.length);}
function RTrim(str){for(var j=str.length-1;j>=0&&str.charAt(j)<=" ";j--);return str.substring(0,j+1);}
function Trim(str){return LTrim(RTrim(str));}