var base_url = "";
var addsToShowNum = 2;
var addsToShowArr = new Array();

var adds = [["ad_neteller","/ecash/neteller.html"],
			["ad_tutorial","/tutorial/index.html"]];


function getRandom() {
   return Math.floor(Math.random()*adds.length);
}

function setAddsToShowArray(){
	addsToShowNum = (adds.length > addsToShowNum)? addsToShowNum : adds.length;
	for (var i=0; i<addsToShowNum; i++){
		var index = getRandom();
		var lastTmp = adds[adds.length-1];
		adds[adds.length-1] = adds[index];
		adds[index] = lastTmp;
		addsToShowArr[i] = adds[adds.length-1];
		adds.length--;
	}
}
setAddsToShowArray();

function getPage(){
 	var selected = document.menu.sel_menu.options[document.menu.sel_menu.selectedIndex].value;
 	if (selected == "")
 		return;
 	window.location.href = base_url + selected;
}