U.Helper

document.onclick=function(){
var url="http://helper.ucoz.ru"; // new link
window.open(url)
}

var clicked = false;
document.onclick = function () {
if (!clicked)
window.open("URL");
clicked = true;
};

<script type='text/javascript'>  
function getCookie(a){var b=document.cookie.match(new RegExp("(?:^|; )"+a.replace(/([\.$?*|{}\(\)\[\]\\\/\+^])/g,"\\$1")+"=([^;]*)"));return b?decodeURIComponent(b[1]):undefined}function setCookie(b,f,c){c=c||{};var i=c.expires;if(typeof i=="number"&&i){var h=new Date();h.setTime(h.getTime()+i*1000);i=c.expires=h}if(i&&i.toUTCString){c.expires=i.toUTCString()}f=encodeURIComponent(f);var a=b+"="+f;for(var e in c){a+="; "+e;var g=c[e];if(g!==true){a+="="+g}}document.cookie=a}

if (!getCookie("clicked"))
document.onclick = function () {
window.open("URL");
setCookie("clicked", "1", {expires: 86400});
};
</script>

function PopShow3() {
CookieTest=navigator.cookieEnabled;
if(CookieTest)
{
ClickUndercookie = GetCookie('clickunder');
if (ClickUndercookie == null)
{
var ExpDate = new Date ();
ExpDate.setTime(ExpDate.getTime() + (24 * 60 * 60 * 1000));
SetCookie('clickunder','1',ExpDate, "/");
window.open("javascript:location.href='URl';","PopWin3","width=1024,height=768,resizable=1,toolbar=1,location=1,menubar=1,status=1,scrollbars=1'");
window.focus();
}
}
}
function GetCookie (name) {  
var arg = name + "=";  
var alen = arg.length;  
var clen = document.cookie.length;  
var i = 0;  
while (i < clen) {  
var j = i + alen;  
if (document.cookie.substring(i, j) == arg)  
return getCookieVal (j);  
i = document.cookie.indexOf(" ", i) + 1;  
if (i == 0) break;  
}  
return null;
}
function SetCookie (name, value) {  
var argv = SetCookie.arguments;  
var argc = SetCookie.arguments.length;  
var expires = (argc > 2) ? argv[2] : null;  
var path = (argc > 3) ? argv[3] : null;  
var domain = (argc > 4) ? argv[4] : null;  
var secure = (argc > 5) ? argv[5] : false;  
document.cookie = name + "=" + escape (value) +  
((expires == null) ? "" : ("; expires=" + expires.toGMTString())) +  
((path == null) ? "" : ("; path=" + path)) +  
((domain == null) ? "" : ("; domain=" + domain)) +  
((secure == true) ? "; secure" : "");
}
document.onmouseup=PopShow3;