var http_request = false;   
function makePOSTRequest(url, parameters, action){
	http_request = false;
		if(window.XMLHttpRequest){
			http_request = new XMLHttpRequest();
				if(http_request.overrideMimeType){
					http_request.overrideMimeType('text');
				}
		}else if(window.ActiveXObject){
			try{
				http_request = new ActiveXObject("Msxml2.XMLHTTP");
			}catch(e){
				try{
					http_request = new ActiveXObject("Microsoft.XMLHTTP");
				}catch(e){
					
				}
			}
		}
		if(!http_request){
			alert('There is no connection to the server .., do you have internet ?!?');
			return false;
		}
		if(action == 0){
			http_request.onreadystatechange=alertContents;
		}
		
		http_request.open('POST', url, true);
      	http_request.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
      	http_request.setRequestHeader("Content-length", parameters.length);
      	http_request.setRequestHeader("Connection", "close");
      	http_request.send(parameters);
} 
function alertContents(){
	if(http_request.readyState == 4){
		if(http_request.status == 200){
			result=http_request.responseText;
			eval(result);
		}else{
			alert('I can not found the server .., do you have internet ?!?');
		}
	}
}