I need help with javascript cookies

So i am working on my school's webpage and i have created a very small script with javascript that i use to show and hide a group of news articles. The problem is i dont know anything about cookies and wanted to make it so that if they close the news items it sets a cookie so that the next time they come back to the page it isnt open or vice versa. could somebody please help me with this.

the html code:

the javascript:

 

I recommend jsCookie,
It could simplify your handling of javascript cookies.
http://codecanyon . net/item/jscookie-easy-to-use-javascript-cookie-library/308627 - (remove spaces)

Now for the solution:

var jsCookie = new jsCookie;
//This will create a cookie that will expire in 30 days.
//Add this code when user clicks to close the headline.
jsCookie.create("headlineClosed","yes",[0,30,0,0]);

PHP:

----------------------------------------------

//Add this code after dom is ready:
if(jsCookie.read("headlineClosed")=="yes"){
//close headline
}else{
//keep open
}

PHP:

Regards