var request = null;
try{request = new XMLHttpRequest();}catch(trymicrosoft){try{request=new ActiveXObject("Msxml2.XMLHTTP");}catch (othermicrosoft){try{request=new ActiveXObject("Microsoft.XMLHTTP");}catch(failed){request=NULL;}}}
if(request == null) alert("Error creating request object!");
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];el.removeChild(childNode);}}}}
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;}