Code that pops up ad special effects (only one IP address pops up once)

<Script>
Var cookieString = new String (document. cookie)
Var cookieHeader = 'Happy _ pop = '// replace happy_pop with any name
Var beginPosition = cookieString. indexOf (cookieHeader)
If (beginPosition <0 ){
Optional values open('2.html ', '', 'top = 0, left = 0, width = 787, height = 480, toolbar = yes, menubar = yes, scrollbars = yes, resizable = yes, location = yes, status = yes ');
Var Then = new Date ()
Then. setTime (Then. getTime () + 60*1000) // set the expiration time for the same IP address, that is, the interval at which the message jumps out.
Document. cookie = 'Happy _ pop = yes; expires = '+ Then. toGMTString () // replace the name of happy_pop with the same name as row 4th
}
</Script>