function GetXmlHttpObject(){
	var xmlHttp=null;
	try{
		// Firefox, Opera 8.0+, Safari
		xmlHttp=new XMLHttpRequest();
	} catch (e){
		// Internet Explorer
		try{
			xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
		} catch (e){
			try{
				xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
			} catch (e){
				alert("Your browser does not support AJAX!");
				return false;
			}
		}
	}
	return xmlHttp;
}

function vgc(tab){
	if(tab == 'software'){
		document.getElementById("vgc-tab-software").className="vgc-btab_on";
		document.getElementById("vgc-tab-hardware").className="vgc-btab";
		document.getElementById("vgc-tab-america").className="vgc-stab_on";
		document.getElementById("vgc-tab-japan").className="vgc-stab";
		document.getElementById("vgc-tab-others").className="vgc-stab";
		document.getElementById("vgc-tab-alltime").className="vgc-mtab_off";
		document.getElementById("vgc-tab-weekly").className="vgc-mtab_off";
		tab = 'america';
	} else if(tab == 'hardware'){
		document.getElementById("vgc-tab-software").className="vgc-btab";
		document.getElementById("vgc-tab-hardware").className="vgc-btab_on";
		document.getElementById("vgc-tab-america").className="vgc-stab_off";
		document.getElementById("vgc-tab-japan").className="vgc-stab_off";
		document.getElementById("vgc-tab-others").className="vgc-stab_off";
		document.getElementById("vgc-tab-alltime").className="vgc-mtab";
		document.getElementById("vgc-tab-weekly").className="vgc-mtab_on";
		tab = 'weekly';
	} else if(tab == 'america' || tab == 'japan' || tab == 'others'){
		document.getElementById("vgc-tab-software").className="vgc-btab_on";
		document.getElementById("vgc-tab-hardware").className="vgc-btab";
		document.getElementById("vgc-tab-america").className="vgc-stab";
		document.getElementById("vgc-tab-japan").className="vgc-stab";
		document.getElementById("vgc-tab-others").className="vgc-stab";
		document.getElementById("vgc-tab-" + tab).className="vgc-stab_on";
	} else if(tab == 'alltime' || tab == 'weekly'){
		document.getElementById("vgc-tab-software").className="vgc-btab";
		document.getElementById("vgc-tab-hardware").className="vgc-btab_on";
		document.getElementById("vgc-tab-alltime").className="vgc-mtab";
		document.getElementById("vgc-tab-weekly").className="vgc-mtab";
		document.getElementById("vgc-tab-" + tab).className="vgc-mtab_on";
	}
	var currHeight = document.getElementById("vgc-results").offsetHeight;
	xmlHttp=GetXmlHttpObject();
	xmlHttp.onreadystatechange=function(){
		if(xmlHttp.readyState==4){
			document.getElementById("vgc-results").innerHTML=xmlHttp.responseText;
		} else {
			document.getElementById("vgc-results").innerHTML="<div style=\"font-size:30px; text-align:center; height:" + currHeight + "px;\">LOADING</div>";
		}
	}
	var url="vgc.php?tab="+tab;
    xmlHttp.open("GET", url, true);
    xmlHttp.send(null);
}

function latestupdates(tab){
	if(tab){
		document.getElementById("arts-tab-1").className="";
		document.getElementById("arts-tab-2").className="";
		document.getElementById("arts-tab-3").className="";
		document.getElementById("arts-tab-" + tab).className="on";
	}
	var currHeight = document.getElementById("arts-results").offsetHeight;
	xmlHttp=GetXmlHttpObject();
	xmlHttp.onreadystatechange=function(){
		if(xmlHttp.readyState==4){
			document.getElementById("arts-results").innerHTML=xmlHttp.responseText;
		} else {
			document.getElementById("arts-results").innerHTML="<div style=\"font-size:30px; text-align:center; height:" + currHeight + "px;\">LOADING</div>";
		}
	}
	var url="mod_articles.php?tab="+tab;
    xmlHttp.open("GET", url, true);
    xmlHttp.send(null);
}
function community(tab){
	if(tab){
		document.getElementById("comm-tab-1").className="";
		document.getElementById("comm-tab-2").className="";
		document.getElementById("comm-tab-3").className="";
		document.getElementById("comm-tab-" + tab).className="on";
	}
	var currHeight = document.getElementById("comm-results").offsetHeight;
	xmlHttp=GetXmlHttpObject();
	xmlHttp.onreadystatechange=function(){
		if(xmlHttp.readyState==4){
			document.getElementById("comm-results").innerHTML=xmlHttp.responseText;
		} else {
			document.getElementById("comm-results").innerHTML="<div style=\"font-size:30px; text-align:center; height:" + currHeight + "px;\">LOADING</div>";
		}
	}
	var url="mod_community.php?tab="+tab;
    xmlHttp.open("GET", url, true);
    xmlHttp.send(null);
}

var ak_curr = 1;
function aroundkombo(switchto){
	if(switchto != ak_curr){
		document.getElementById("aroundkombo-"+ak_curr+"_text").className="aroundkombo-text_off";
		document.getElementById("aroundkombo-"+switchto+"_text").className="aroundkombo-text";
		document.getElementById("aroundkombo-"+ak_curr+"_img").className="aroundkombo-img_off";
		document.getElementById("aroundkombo-"+switchto+"_img").className="aroundkombo-img";
		ak_curr = switchto;
	}
}

function vote(){
	var answer = document.poll.answer;
	var id = document.poll.pollid.value;
    var count = -1;
    for(var i=answer.length-1; i > -1; i--){
        if(answer[i].checked){
			count = i;
			i = -1;
		}
    }
	if(count > -1){
		xmlHttp=GetXmlHttpObject();
		xmlHttp.onreadystatechange=function(){
			if(xmlHttp.readyState==4){
				document.getElementById("poll").innerHTML=xmlHttp.responseText;
			} else {
				document.getElementById("poll").innerHTML="<div style=\"font-size:30px; text-align:center;\">LOADING</div>";
			}
		}
		var url="/poll.php?id="+id+"&answer="+answer[count].value;
		xmlHttp.open("GET", url, true);
		xmlHttp.send(null);
	}
}