function checkdomainvalidity(evt) {  
	var charCode = (evt.which) ? evt.which : event.keyCode
	if ((charCode >= 48 && charCode <=57) | (charCode >=65 && charCode <= 90) | (charCode >= 97 && charCode <= 122) | charCode == 45 | charCode == 8)
		return true;
	return false;
}

function createXMLHttpRequest() {
 var ua;
 if(window.XMLHttpRequest) {
 try {
  ua = new XMLHttpRequest();
 } catch(e) {
  ua = false;
 }
 } else if(window.ActiveXObject) {
  try {
	ua = new ActiveXObject("Microsoft.XMLHTTP");
  } catch(e) {
	ua = false;
  }
 }
return ua;
}

var run;

function runCheck(d){
          var req= createXMLHttpRequest();
          req.open('GET', 'http://www.daginet.com/vi/checkdomain.php?n='+ d + '&rnd=' + Math.random(), true);
          req.onreadystatechange = function() {      
               if (req.readyState == 4){
                  response = req.responseText;
                  //document.getElementById("waiticon").style.visibility = 'hidden';
                  run--;
                  document.getElementById("showresults").innerHTML = document.getElementById("showresults").innerHTML + response;
                  if (run==0){
                    document.getElementById("loading").style.visibility = 'hidden';
                  }                  
               }
          };
          req.send(null);
}

function searchMe(fobj) { 
  document.getElementById("domainsearch_results").style.visibility = 'visible';  
  document.getElementById("showresults").innerHTML='';  
  var check=false;
  for(i=0;i<fobj.extid.length;i++){    
		if(fobj.extid[i].checked){
		    check=true;
		    break;
		}
	}	
	if (check){
	  document.getElementById("loading").style.visibility = 'visible'; 
    run=0; 
    for(i=0;i<fobj.extid.length;i++){    
  		if(fobj.extid[i].checked){       
  		        run++;
              runCheck(fobj.searchword.value + '.' + fobj.extid[i].value);
      }
  	}
	}else{
	   document.getElementById("showresults").innerHTML='<span>Vui lòng check phần mở rộng!</span>'; 
  }
}

function closeMe() {
  document.getElementById("domainsearch_results").style.visibility = 'hidden';
  document.getElementById("loading").style.visibility = 'hidden';
}

var browser=navigator.appName;
function forMe(obj) {  
  if (browser=="Microsoft Internet Explorer"){
    document.getElementById(obj).checked=!document.getElementById(obj).checked;
  }
  //
  //var browser=navigator.appName;
 // alert(browser);
}