function MyAjaxRequest(target_div,file,check_div)
{
	var MyHttpRequest = false;
//	var MyHttpLoading = '<img src=\"images/ajaxLaden.gif\" border=\"0\">';     voorals nog geen grote data dus nauwelijks laadtijd
	var MyHttpLoading = '';
	var ErrorMSG = 'Sorry - No XMLHTTP support in your browser';

	if(check_div)
	{
		var check_value = document.getElementById(check_div).value;
	}
	else
	{
		var check_value = '';
	}



	if(window.XMLHttpRequest)
	{
		try
		{
			MyHttpRequest = new XMLHttpRequest();
		}
		catch(e)
		{
			MyHttpRequest = false;
		}
	}
	else if(window.ActiveXObject)
	{
		try
		{
			MyHttpRequest = new ActiveXObject("Msxml2.XMLHTTP");
		}
		catch(e)
		{
			try
			{
				MyHttpRequest = new ActiveXObject("Microsoft.XMLHTTP");
			}
			catch(e)
			{
				MyHttpRequest = false;
			}
		}
	}
	else
	{
		MyHttpRequest = false;
	}



	if(MyHttpRequest)
	{
		var random = Math.random() * Date.parse(new Date());
		var file_array = file.split('.');
		
		if(file_array[1] == 'php')
		{
			var query_string = '?rand=' + random;
		}
		else if(file_array[1] == 'htm' || file_array[1] == 'html')
		{
			var query_string = '';
		}
		else // we have presumable a php file with a query string attached
		{
			var query_string = check_value + '&rand=' + random;
		}
		
		
		if(target_div != '')
		{
			MyHttpRequest.open("get", url_encode(file + query_string), true);
			MyHttpRequest.onreadystatechange = function ()
			{
				if(MyHttpRequest.readyState == 4)
				{
					if(target_div != '')
					{
						document.getElementById(target_div).innerHTML = MyHttpRequest.responseText;
					}
				}
				else
				{
					if(target_div != '')
					{
						document.getElementById(target_div).innerHTML = MyHttpLoading;
					}
				}
			}
			MyHttpRequest.send(null);
		}
		else
		{
			try
			{
				MyHttpRequest.open("get", url_encode(file + query_string), false);
				MyHttpRequest.send(null);
				return MyHttpRequest.responseText;
			}
			catch(e)
			{
				//error	
			}
		}
	}
	else 
	{
		if(target_div != '')
		{
			document.getElementById(target_div).innerHTML = ErrorMSG;
		}
	}
}


function url_encode(string)
{
	var string;
	var safechars = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz/-_.&?=";
	var hex = "0123456789ABCDEF";
	var encoded_string = "";
	
	for(var i = 0; i < string.length; i++)
	{
		var character = string.charAt(i);
		
		if(character == " ")
		{
			encoded_string += "+";
		}
		else if(safechars.indexOf(character) != -1)
		{
			encoded_string += character;
		}
		else
		{
			var hexchar = character.charCodeAt(0);
			
			if(hexchar > 255)
			{
				encoded_string += "+";
			}
			else
			{
				encoded_string += "%";
				encoded_string += hex.charAt((hexchar >> 4) & 0xF);
				encoded_string += hex.charAt(hexchar & 0xF);
			}
		}
	}
	return encoded_string;
}