var graph_type = 2;
var current_period = 183;
function switchimg(n){
	graph_type = n;
	document.getElementById("rank").background="../v5/images/rank_r_bg4.gif";
	document.getElementById("reach").background="../v5/images/rank_r_bg4.gif";
	document.getElementById("pv").background="../v5/images/rank_r_bg4.gif";
	if(n==1)
	document.getElementById("rank").background="../v5/images/rank_r_bg3.gif";
	if(n==2)
	document.getElementById("reach").background="../v5/images/rank_r_bg3.gif";
	if(n==3)
	document.getElementById("pv").background="../v5/images/rank_r_bg3.gif";
	refreshimg();
}
function switchperiod(period){
	current_period = period;
	refreshimg();
}
function refreshimg(){
	var g = document.getElementById("graph");
	if(graph_type==1) g.src = chart_url + "&view=rank&days="+current_period;
	else if(graph_type==2) g.src = chart_url + "&view=reach&days="+current_period;
	else if(graph_type==3) g.src = chart_url + "&view=pv&days="+current_period;
}
function vscheckinput() {
	var vsurl = document.getElementById("vsurl");
	var vss1 = document.getElementById("vss1");
	var vss2 = document.getElementById("vss2");
	var vss3 = document.getElementById("vss3");
	if(formaturl(vss1)|formaturl(vss2)|formaturl(vss3))
		return true;
	else {
		alert("����дվ��Աȵ���ַ��");
		return false;
	}
}
function formaturl(obj){
	obj.value = obj.value.trim().toLowerCase();
	if(obj.value.indexOf("http://")==0)
		obj.value = obj.value.substr(7);
	if(obj.value.indexOf("/")!=-1)
		obj.value = obj.value.substring(0,obj.value.indexOf("/"));
	if(obj.value=="") {
		return false;
	}
	if(checkweb(obj)==false) {
		return false;
	}
	return true;
}

function switchfoot(n){
	document.getElementById("tdrank").background="../v5/images/rank_r_bg4.gif";
	document.getElementById("tdreach").background="../v5/images/rank_r_bg4.gif";
	document.getElementById("tdpv").background="../v5/images/rank_r_bg4.gif";
	document.getElementById("divrank").style.display = "none";
	document.getElementById("divreach").style.display = "none";
	document.getElementById("divpv").style.display = "none";
	if(n==1){
	document.getElementById("tdrank").background="../v5/images/rank_r_bg3.gif";
	document.getElementById("divrank").style.display = "block";
	}
	if(n==2){
	document.getElementById("tdreach").background="../v5/images/rank_r_bg3.gif";
	document.getElementById("divreach").style.display = "block";
	}
	if(n==3){
	document.getElementById("tdpv").background="../v5/images/rank_r_bg3.gif";
	document.getElementById("divpv").style.display = "block";
	}
	
}