function Domein() {
	var domain = document.domain;
	domain = domain.replace('www', '');
	return domain;
}

function getCookie(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 "";
}

function Set_Cookie( name, value, expires, path, domain, secure )
{
	var today = new Date();
	var expires = 1;
	today.setTime( today.getTime() );
	
	if ( expires )
	{
	expires = expires * 1000 * 60 * 60 * 24;
	}
	var expires_date = new Date( today.getTime() + (expires) );
	
	document.cookie = name + "=" +escape( value ) +
	( ( expires ) ? ";expires=" + expires_date.toGMTString() : "" ) +
	( ( path ) ? ";path=" + path : "" ) +
	( ( domain ) ? ";domain=" + domain : "" ) +
	( ( secure ) ? ";secure" : "" );
}

function checkCookie(c_name, value)
{
  var cookie = getCookie(c_name);
  if (cookie!=null && cookie!="")
  {
	  if (cookie != value)
	  {
				Set_Cookie( c_name, cookie, -1, '/', Domein(), '');
				Set_Cookie( c_name, value, 1, '/', Domein(), '');
	  }
  }
  else
  {
				Set_Cookie( c_name, value, 1, '/', Domein(), '');
  }
}