创建只弹出一次窗口


<!--Two steps to installing this script-->

<!--1) Copy everything below, and paste in BODY section of page-->

<!--2) Configure variables below to customize popup-->

<SCRIPT LANGUAGE="JavaScript">

/*

For this script (Pop up window) and 100s more, visit

http://java-scripts.net or http://wsabstract.com

*/

var expDays = 1; // number of days the cookie should last (0 will cause it to always pop up)

var page = "http://www.codearena.com";

var windowprops = "width=650,height=500,location=yes,toolbar=no,menubar=no,scrollbars=yes,resizable=yes";

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" : "");

}

function DeleteCookie (name) { 

var exp = new Date(); 

exp.setTime (exp.getTime() - 1); 

var cval = GetCookie (name); 

document.cookie = name + "=" + cval + "; expires=" + exp.toGMTString();

}

var exp = new Date(); 

exp.setTime(exp.getTime() + (expDays*24*60*60*1000));

function amt(){

var count = GetCookie('count')

if(count == null) {

SetCookie('count','1')

return 1

}

else {

var newcount = parseInt(count) + 1;

DeleteCookie('count')

SetCookie('count',newcount,exp)

return count

}

}

function getCookieVal(offset) {

var endstr = document.cookie.indexOf (";", offset);

if (endstr == -1)

endstr = document.cookie.length;

return unescape(document.cookie.substring(offset, endstr));

}



function checkCount() {

var count = GetCookie('count');

if (count == null) {

count=1;

SetCookie('count', count, exp);

window.open(page, "", windowprops);

}

else {

count++;

SetCookie('count', count, exp);

}

}

window.onload=checkCount

</script>

<p><font face="arial" size="-2">Free scripts provided by</font><br>

<font face="arial, helvetica" size="-2"><a href="http://wsabstract.com">Website

Abstraction</a></font></p>