/**
* AJAX forms
* 
* Author : Hatem B.Y.
*/
var AJAXForms = false;
var LastField = null;
var isIE = false;
// on !IE we only have to initialize it once
if (window.XMLHttpRequest) {
	AJAXForms = new XMLHttpRequest();
}


function CheckField(field) {

	if (window.XMLHttpRequest) {
	// branch for IE/Windows ActiveX version
	} else if (window.ActiveXObject) {
		AJAXForms = new ActiveXObject("Microsoft.XMLHTTP");
	}

  AJAXForms.onreadystatechange = processChange;
  AJAXForms.open("GET", "check.php?op=ajax&field=" +field.name+"&value=" + field.value);
  LastField = field.name;
  AJAXForms.send(null);
}

function processChange() {
  if (AJAXForms.readyState == 4) { 
  
    var  res = document.getElementById(LastField);
    res.innerHTML = AJAXForms.responseText;
    res.style.visibility = "visible";
    
  }
}