function createXMLHttpRequest() {
	     if (window.ActiveXObject) {
		    xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
		 } 
			else if (window.XMLHttpRequest) {
			 xmlHttp = new XMLHttpRequest();
			 }
		}

var hexChars = "0123456789ABCDEF";

function Dec2Hex (Dec) {
	var a = Dec % 16;
	var b = (Dec - a)/16;
	hex = "" + hexChars.charAt(b) + hexChars.charAt(a);
	return hex;
}

function thai(s){
	s2='';
	for(var i=0;i<s.length;i++){
		if(s.charCodeAt(i)>3423){
		n=s.charCodeAt(i)-3424;
		s2+='%'+Dec2Hex(n);
	}else s2+=s.charAt(i);
	  }
	  return s2
	}

function search_now(idF){
	var keyS = "";
	var listBB ="";
	var aText="";

	if(idF=='1'){
	 listBB = document.getElementById("search_result");
	 aText=document.getElementById("alert_text_search");
	  keyS = document.getElementById("keyword_search");
	}

	var url='';
	
	if(keyS.value==""){
		aText.innerHTML = '<font color=red>please insert key words</font>';
		listBB.innerHTML='';
	}else{
		if(keyS.value.length > 3){	
	 url = "search_now.php?key="+thai(keyS.value);
	 createXMLHttpRequest();
		xmlHttp.onreadystatechange = function () {
                if (xmlHttp.readyState == 4) {
                    if (xmlHttp.status == 200) {
						aText.innerHTML='';
						listBB.innerHTML = xmlHttp.responseText;
						
					}
                }else{
						aText.innerHTML='';
						listBB.innerHTML = "<img src=\"loading.gif\" /><br>Loading.....";
				}
            };
		xmlHttp.open("GET", url, true);
		xmlHttp.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
		xmlHttp.send(null);
	}else{
	aText.innerHTML = '<font color=red>please insert character over 3 character</font>';
		listBB.innerHTML='';
	}
	}
}