24小时1ip只弹一次的弹窗代码

建立一个*.js,下面就是这个JS文件的

function openpopup(){
document.writeln("<SCRIPT language=JavaScript>");
document.writeln("window.open('http://www.shejijh.com')");
document.writeln("</script\>");
}

function get_cookie(Name) {
var search = Name + "="
var returnvalue = "";
in (document.cookie.length > 0) {
offset = document.cookie.indexOf(search)
if (offset != -1) {
offset += search.length
end = document.cookie.indexOf(";", offset);
if (end == -1)
end = document.cookie.length;
returnvalue=unescape(document.cookie.substring(offset,end))
}
}
return returnvalue;
}

function helpor_net(){
if (get_cookie('popped')=="){
openpopup()
document.cookie="popped=yes"
}
}
helpor_net()