// set a cookie for a particular name
function setCookie(name, value) {
   var docLocation = document.URL;
   var docLocationLen = docLocation.length;
   document.cookie = name + "=" + docLocationLen + "~" + escape(document.location) + escape(value) + ";PATH=/" ;
}
function readCookie (CookieName) {
  var lf = "\n";
  var CookieString = document.cookie;
  var CookieSet = CookieString.split (';');
  var SetSize = CookieSet.length;
  var CookiePieces
  var cookieValue = "";
  var x = 0;
  for (x = 0; ((x < SetSize) && (cookieValue == "")); x++) {
    CookiePieces = CookieSet[x].split ('=');
    if (CookiePieces[0].substring (0,1) == ' ') {
      CookiePieces[0] = CookiePieces[0].substring (1, CookiePieces[0].length);
    }
    if (CookiePieces[0] == CookieName) {
     if(CookiePieces[1])
     {
    	 cookieValue = CookiePieces[1];
     }
    }
  }
  return cookieValue;
}

function Get_Cookie( check_name ) {
	// first we'll split this cookie up into name/value pairs
	// note: document.cookie only returns name=value, not the other components
	var a_all_cookies = document.cookie.split( ';' );
	var a_temp_cookie = '';
	var cookie_name = '';
	var cookie_value = '';
	var b_cookie_found = false; // set boolean t/f default f

	for ( i = 0; i < a_all_cookies.length; i++ )
	{
		// now we'll split apart each name=value pair
		a_temp_cookie = a_all_cookies[i].split( '=' );


		// and trim left/right whitespace while we're at it
		cookie_name = a_temp_cookie[0].replace(/^\s+|\s+$/g, '');

		// if the extracted name matches passed check_name
		if ( cookie_name == check_name )
		{
			b_cookie_found = true;
			// we need to handle case where cookie has no value but exists (no = sign, that is):
			if ( a_temp_cookie.length > 1 )
			{
				cookie_value = unescape( a_temp_cookie[1].replace(/^\s+|\s+$/g, '') );
			}
			// note that in cases where cookie is initialized but no value, null is returned
			return cookie_value;
			break;
		}
		a_temp_cookie = null;
		cookie_name = '';
	}
	if ( !b_cookie_found )
	{
		return null;
	}
}

function Set_Cookie( name, value, expires)
{
    // set time, it's in milliseconds
    var today = new Date();
    today.setTime( today.getTime() );
    
    /*
    if the expires variable is set, make the correct expires time, the current script below will set it for x number of days, to make it for hours,
    delete * 24, for minutes, delete * 60 * 24
    */
    if ( expires ){
        expires = parseInt(expires) * 1000 * 60 * 60 * 24;
    }
    var expires_date = new Date( today.getTime() + (expires) );
    
    document.cookie = name + "=" + escape( value ) + ";path=/" +( ( expires ) ? ";expires=" + expires_date.toGMTString() : "" );
}

// this deletes the cookie when called
function Delete_Cookie( name, path, domain ) {
    if ( Get_Cookie( name ) ) document.cookie = name + "=" +
    ( ( path ) ? ";path=" + path : "") +
    ( ( domain ) ? ";domain=" + domain : "" ) +
    ";expires=Thu, 01-Jan-1970 00:00:01 GMT";
}