//   Function to update or create(if not exist) cookies with a value
function set_cookie ( name, value, exp_y, exp_m, exp_d, path, domain, secure )
{
  var cookie_string = name + "=" + escape ( value );

  if ( exp_y )
  {
    var expires = new Date ( exp_y, exp_m, exp_d );
    cookie_string += "; expires=" + expires.toGMTString();
  }

  if ( path )
        cookie_string += "; path=" + escape ( path );

  if ( domain )
        cookie_string += "; domain=" + escape ( domain );
  
  if ( secure )
        cookie_string += "; secure";
  
  document.cookie = cookie_string;
}


//   Function to create cookies
function createCookie(name, value, days)
{
	if (days)
	{
		var date = new Date();
		date.setTime(date.getTime()+(days*24*60*60*1000));
		var expires = "; expires="+date.toGMTString();
	}
	else 
	{
	    var expires = "";
	}
	document.cookie = name+ "=" + value + expires + "; path=/";
}


//    Function to erase cookies
function eraseCookie(name)
{
	createCookie(name, "", -1);
}


//   Dynamic CSS files insertion
function insertCSS(cssPath, cssID)
{
    var headID = document.getElementsByTagName("head")[0];         
    var cssNode = document.createElement('link');
    cssNode.type = 'text/css';
    cssNode.rel = 'stylesheet';
    cssNode.href = cssPath;
    cssNode.id = cssID;
    cssNode.media = 'screen';
    headID.appendChild(cssNode);
}