function clsAjax()
{
	this.http_request = false;	
	this.externalFunc = false;

	this.makeRequest = function (url, strSendData, httpSendOption, var1){

				externalFunc = var1;
		        http_request = false;
		
                if (window.XMLHttpRequest) { // Mozilla, Safari,...
              		http_request = new XMLHttpRequest();
                    	if (http_request.overrideMimeType) {
                        	http_request.overrideMimeType('text/xml');
                    	}
                } else if (window.ActiveXObject) { // IE
                    try {
                        http_request = new ActiveXObject("Msxml2.XMLHTTP");
                    } catch (e) {
                        try {
                        http_request = new ActiveXObject("Microsoft.XMLHTTP");
                        } catch (e) {}
                    }
                }
		
                if (!http_request) 
                {
                    alert('Giving up :( Cannot create an XMLHTTP instance');
                    return false;
                }
		                		               
		
				http_request.onreadystatechange = function()
				{		
		          	if (http_request.readyState == 4) 
		          	{
		                    if (http_request.status == 200) 
		                    {							                            							                        
							    externalFunc(http_request.responseText);							                        								
		                    } 
		                    else 
		                    {
		                        alert('There was a problem with the request.');
		                    }
		                }							
				};
		
                http_request.open(httpSendOption, url, true);
                http_request.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
                http_request.send(strSendData);
		
		
	    }


       	
}