var http_request = false;
   function makePOSTRequest(url, parameters) {
      http_request = false;
      if (window.XMLHttpRequest) { // Mozilla, Safari,...
         http_request = new XMLHttpRequest();
         if (http_request.overrideMimeType) {
         	// set type accordingly to anticipated content type
            //http_request.overrideMimeType('text/xml');
            http_request.overrideMimeType('text/html');
         }
      } 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('Cannot create XMLHTTP instance');
         return false;
      }
      
      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) {
            //alert(http_request.responseText);
            result = http_request.responseText;
            document.getElementById('content').innerHTML = result;            
         } else {
            alert('There was a problem with the request.');
         }
      }
   }
   
   function get(obj,url) {
	if (url == 'html/inc/newsletter.php?start=2')
	{
	      	 if(document.getElementById("name").value == "")  {
		   alert("Bitte Name eingeben!");
		   document.getElementById("name").focus();
		   return ;
		  }
		 if(document.getElementById("email").value == "")  {
		   alert("Bitte Email eingeben!");
		   document.getElementById("email").focus();
		   return ;
		  }
		 if(document.getElementById("email").value.indexOf('@') == -1) {
		   alert("Keine E-Mail-Adresse!");
		   document.getElementById("email").focus();
		   return ;
		  }
	      var poststr = "name=" + encodeURI( document.getElementById("name").value ) +
		            "&email=" + encodeURI( document.getElementById("email").value );
	}
	else if (url == 'html/inc/newsletter.php?start=3')
	{
		
		 if(document.getElementById("email2").value == "")  {
		   alert("Bitte Email eingeben!");
		   document.getElementById("email2").focus();
		   return ;
		  }
		 if(document.getElementById("email2").value.indexOf('@') == -1) {
		   alert("Keine E-Mail-Adresse!");
		   document.getElementById("email2").focus();
		   return ;
		  }
	      var poststr = "email=" + encodeURI( document.getElementById("email2").value );
	}
	else if (url == 'html/inc/mail.php?start=2')
	{
		var poststr = "name=" + encodeURI( document.getElementById("name").value ) +
		            "&email=" + encodeURI( document.getElementById("email").value )+
		            "&homepage=" + encodeURI( document.getElementById("homepage").value )+
		            "&text=" + encodeURI( document.getElementById("text").value );
	}
      makePOSTRequest(url, poststr);
   }