function check_banner (caller,id)
{
 var state = readcookie('State');
 var caller_e = document.getElementById(caller);
 var e = document.getElementById(id);
 e.style.display = 'block'
 caller_e.innerHTML="-";
	if (state.toLowerCase() == "unvisible".toLowerCase())
	{

	toggle_visibility(caller_e,id);
	}

}



//give an element id , this function toggles its visibility 
function toggle_visibility (caller,id)
{

     var e = document.getElementById(id);
	 
       if(e.style.display == 'block' || e.style.display == '' )
	 {      
    	// e.style.display = 'none';
		$('#'+id).slideToggle();
		 caller.innerHTML="+";

		 setcookie('unvisible');
		 

		}	  
    else
         {$('#'+id).slideToggle();
		  caller.innerHTML ="-";
	     
		  setcookie('visible');
		}

}


//Functions for handling the page cookies 
function setcookie(state) {
exp=new Date();
plusMonth=exp.getTime()+(31*24*60*60*1000);
exp.setTime(plusMonth);
document.cookie='State='+state+';expires='+exp.toGMTString();
}


function readcookie(c_name)
{
if (document.cookie.length>0)
  {
  c_start=document.cookie.indexOf(c_name + "=");
  if (c_start!=-1)
    {
    c_start=c_start + c_name.length+1;
    c_end=document.cookie.indexOf(";",c_start);
    if (c_end==-1) c_end=document.cookie.length;
    return unescape(document.cookie.substring(c_start,c_end));
    }
  }
return "";
}