var g_names = []; //'myip';
var g_dnchk2_names_idx = 0;

var g_tlds = ['com', 'net', 'org'];
var g_dnchk2_tlds_idx = 0;


var g_dnchk2_req_num = 10;
var g_delimiter = " ";

var g_dnchk2_req = new Array(g_dnchk2_req_num);

//containers for each antiviurs result
var g_dnchk2_container0 = new Array(g_dnchk2_req_num);
for (i = 0; i < g_dnchk2_container0.length; i++) {
	g_dnchk2_container0[i] = 0;
}




function dnchk2_loadXMLDoc(rid, url, func) {
	//alert("request:"+rid);
    if (window.XMLHttpRequest) {
		//alert("XMLHttpRequest OK");
        g_dnchk2_req[rid] = new XMLHttpRequest();
        g_dnchk2_req[rid] .onreadystatechange =function () {
			func(rid);
		}
        g_dnchk2_req[rid] .open("GET", url, true);
        g_dnchk2_req[rid] .send(null);
    } else if (window.ActiveXObject) {
		//alert("ActiveXObject OK");
        g_dnchk2_req[rid]  = new ActiveXObject("Microsoft.XMLHTTP");
        if (g_dnchk2_req[rid] ) {
            g_dnchk2_req[rid] .onreadystatechange =function () {
			  func(rid);
		    }
            g_dnchk2_req[rid] .open("GET", url, true);
            g_dnchk2_req[rid] .send();
        }
    } else {
		alert("Cannot send request, maybe you need Firefox");
	}
}



function dnchk2_process_req(rid) {   

	if (g_dnchk2_req[rid].readyState == 4) {
		if (g_dnchk2_req[rid].status == 200) {
			var mytext=g_dnchk2_req[rid].responseText;

			var cached = mytext.search(/CACHED/i);

			//1|||1|||0|||0|||
			var res = mytext.split("|");
			if(window.location.host.search(/myip.cn/i) != -1) { 
				if (res[0] == 0)
					g_dnchk2_container0[rid].innerHTML = '<font color=green>未注册</font>';
				else if (res[0] == 1)
					g_dnchk2_container0[rid].innerHTML = '<font color=red>已注册或不可注册</font>';
				else 
					g_dnchk2_container0[rid].innerHTML = '未知';
			} else {
				if (res[0] == 0)
					g_dnchk2_container0[rid].innerHTML = '<font color=green>Available</font>';
				else if (res[0] == 1)
					g_dnchk2_container0[rid].innerHTML = '<font color=red>Taken</font>';
				else 
					g_dnchk2_container0[rid].innerHTML = 'Unknown';			
			}
			if (cached != -1) {
				g_dnchk2_container0[rid].innerHTML += '.';
			}
			g_dnchk2_container0[rid]=0;
		} else {
			g_dnchk2_container0[rid].innerHTML = "E";
			g_dnchk2_container0[rid]=0;
		}
		dnchk2_query();
	}  
}



function dnchk2_query()
{
	var rid = -1;
	var id = 0;
	var nid = 0;
	var tld = 'com';

	for (i = 0; i < g_dnchk2_container0.length; i++) {
		if (g_dnchk2_container0[i] == 0) {
			rid = i;
			break;
		}
	}

	if(rid == -1){ 
		//alert("Please wait, too many requests");
		return;
	} else {
	
		if (g_dnchk2_tlds_idx >= g_tlds.length) {
			g_dnchk2_names_idx++;
			g_dnchk2_tlds_idx = 0;
		}
		id = g_dnchk2_tlds_idx;
		g_dnchk2_tlds_idx++;

		if (g_dnchk2_names_idx >= g_names.length) {
			return false;
		}
		nid = g_dnchk2_names_idx;


		tld = g_tlds[id];
		name = g_names[nid];
		

		var res_id =  'dnchk2_result_'+nid+'_'+id+'_0';
		g_dnchk2_container0[rid] = document.getElementById(res_id);
		if (g_dnchk2_container0[rid] == null) alert("Internal error, no container0");

		//已经被domain.js填写内容了，递归调用下一个
		if (g_dnchk2_container0[rid].innerHTML != '') {
			g_dnchk2_container0[rid]=0;
			return dnchk2_query();  
		}
		g_dnchk2_container0[rid].innerHTML="<img border=0 src=\"/images/spinner.gif\">";
		
		var url = '/dnchk.php?&name='+name;

		url += '&suffix[]='+tld;

		//alert(url);
		//send request
		dnchk2_loadXMLDoc(rid, url, dnchk2_process_req);    
    }
}