function initAjax(){
	if(window.XMLHttpRequest) { // branch for native XMLHttpRequest object
    	try {
			httpObj = new XMLHttpRequest();
        } catch(e) {
			httpObj = false;
        }
    } else if(window.ActiveXObject) { // branch for IE/Windows ActiveX version
       	try {
        	httpObj = new ActiveXObject("Msxml2.XMLHTTP");
      	} catch(e) {
        	try {
          		httpObj = new ActiveXObject("Microsoft.XMLHTTP");
        	} catch(e) {
          		httpObj = false; 
        	} 
		}
	}
	if(window.ActiveXObject)
		domObj = new ActiveXObject("Microsoft.XMLDOM");
	else 
		domObj = new DOMParser();	
	if(!httpObj) alert('Error! Request object couldn\'t be created.');
}