function getAllComments(id){
	var ajaxRequest;  
	try{
		// Opera 8.0+, Firefox, Safari
		ajaxRequest = new XMLHttpRequest();
	} catch (e){
		// Internet Explorer Browsers
		try{
			ajaxRequest = new ActiveXObject("Msxml2.XMLHTTP");
		} catch (e) {
			try{
				ajaxRequest = new ActiveXObject("Microsoft.XMLHTTP");
			} catch (e){
				
				alert("Your browser broke!");
				return false;
			}
		}
	}
	
	ajaxRequest.onreadystatechange = function(){
		if(ajaxRequest.readyState == 4){
			var commentsDiv = document.getElementById('commentsDiv');
			commentsDiv.innerHTML = ajaxRequest.responseText;
		}
	};
	
	var queryString = "?cmd=getAllComments&id=" + id;
	ajaxRequest.open("GET", "commentHandling.php" + queryString, true);
	ajaxRequest.send(null); 
}

function getComments(id){
	var ajaxRequest;  
	try{
		// Opera 8.0+, Firefox, Safari
		ajaxRequest = new XMLHttpRequest();
	} catch (e){
		// Internet Explorer Browsers
		try{
			ajaxRequest = new ActiveXObject("Msxml2.XMLHTTP");
		} catch (e) {
			try{
				ajaxRequest = new ActiveXObject("Microsoft.XMLHTTP");
			} catch (e){
				
				alert("Your browser broke!");
				return false;
			}
		}
	}
	
	ajaxRequest.onreadystatechange = function(){
		if(ajaxRequest.readyState == 4){
			var commentsDiv = document.getElementById('commentsDiv');
			commentsDiv.innerHTML = ajaxRequest.responseText;
		}
	};
	
	var queryString = "?cmd=getComments&id=" + id;
	ajaxRequest.open("GET", "commentHandling.php" + queryString, true);
	ajaxRequest.send(null); 
}

function getWriteCommentForm(id) {

	var ajaxRequest;  
	try{
		// Opera 8.0+, Firefox, Safari
		ajaxRequest = new XMLHttpRequest();
	} catch (e){
		// Internet Explorer Browsers
		try{
			ajaxRequest = new ActiveXObject("Msxml2.XMLHTTP");
		} catch (e) {
			try{
				ajaxRequest = new ActiveXObject("Microsoft.XMLHTTP");
			} catch (e){
				
				alert("Your browser broke!");
				return false;
			}
		}
	}
	
	ajaxRequest.onreadystatechange = function(){
		if(ajaxRequest.readyState == 4){
			var commentsDiv = document.getElementById('writeCommentDiv');
			commentsDiv.innerHTML = ajaxRequest.responseText;
		}
	};
	
	var queryString = "?cmd=writeComment&id=" + id;
	ajaxRequest.open("GET", "commentHandling.php" + queryString, true);
	ajaxRequest.send(null); 
}

function updateComments(id) {
	var ajaxRequest;  
	try{
		ajaxRequest = new XMLHttpRequest();
	} catch (e){
		try{
			ajaxRequest = new ActiveXObject("Msxml2.XMLHTTP");
		} catch (e) {
			try{
				ajaxRequest = new ActiveXObject("Microsoft.XMLHTTP");
			} catch (e){
				alert("Your browser broke!");
				return false;
			}
		}
	}
	
	ajaxRequest.onreadystatechange = function(){
		if(ajaxRequest.readyState == 4){
			var commentsDiv = document.getElementById('commentsDiv');
			commentsDiv.innerHTML = ajaxRequest.responseText;
		}
	};
	var text = encodeURIComponent(document.getElementById('text').value);
	var url = encodeURIComponent(document.getElementById('url').value);
	var mediumOwner = encodeURIComponent(document.getElementById('mediumOwner').value);
	var queryString = "?cmd=addComment&text=" + text + "&url=" + url +"&id=" + id + "&mediumOwner="+mediumOwner;
	ajaxRequest.open("GET", "commentHandling.php" + queryString, true);
	ajaxRequest.send(null); 
	document.getElementById('text').value = "";
	document.getElementById('url').value = "";
}