var http = createRequestObject();

function createRequestObject(){
	var objAjax;
	var browser = navigator.appName;

	if(browser == "Microsoft Internet Explorer"){		
		objAjax = new ActiveXObject("Microsoft.XMLHTTP");
	}
	else{
		objAjax = new XMLHttpRequest();
	}	return objAjax;
}

function getNewContent(lsCompany){
	switch(lsCompany){
		case 'guy':
			url = 'keyStaff/guy.txt';
			break;
		case 'iain':
   			url = 'keyStaff/iain.txt';
			break;
		case 'garry':
   			url = 'keyStaff/garry.txt';
			break;	
		case 'michael':
   			url = 'keyStaff/michael.txt';
			break;	
		case 'colin':
   			url = 'keyStaff/colin.txt';
			break;	
		case 'claire':
   			url = 'keyStaff/claire.txt';
			break;	
		case 'lynn':
   			url = 'keyStaff/lynn.txt';
			break;
		case 'gordon':
   			url = 'keyStaff/gordon.txt';
			break;			
	}

	http.open('get',url);
	http.onreadystatechange = updateNewContent;
	http.send(null);	
	return false;
}

function updateNewContent(){	
	if(http.readyState == 4){		
		document.getElementById('mySentence').innerHTML = http.responseText;	
	}
}