// name - name of the cookie
// [path] - path of the cookie (must be same as path used to create cookie)
// [domain] - domain of the cookie (must be same as domain used to create cookie)
// * path and domain default if assigned null or omitted if no explicit argument proceeds
function DeleteCookie(name, path, domain) 
{
   if ( GetCookie( name ) ) {
      document.cookie = name + "=" + 
      ((path) ? "; path=" + path : "") +
      ((domain) ? "; domain=" + domain : "") +
      "; expires=Thu, 01-Jan-1970 00:00:01 GMT";
   }
}

// name - name of the desired cookie
// * return string containing value of specified cookie or null if cookie does not exist
function GetCookie(name) 
{
   var dc = document.cookie;
   var prefix = name + "=";
   var begin = dc.indexOf("; " + prefix);
   if (begin == -1) {
      begin = dc.indexOf(prefix);
      if (begin != 0) return null;
   } else
      begin += 2;

   var end = document.cookie.indexOf(";", begin);
   if (end == -1)
      end = dc.length;

   return unescape(dc.substring(begin + prefix.length, end));
}


// Calculate the left position of the element, relative to the body.
function GetElementLeft(element) {

	var left = 0; 
	while ( element ) {
		left	  += element.offsetLeft;
		element	= element.offsetParent;
	}
	return left;
}

// Calculate the top position of the element, relative to the body.
function GetElementTop(element) {

	var top = 0; 
	while (element) {
		top	  += element.offsetTop;
		element	= element.offsetParent;
	}
	return top;	
}

// name - name of the cookie
// value - value of the cookie
// [expires] - expiration date of the cookie (defaults to end of current session)
// [path] - path for which the cookie is valid (defaults to path of calling document)
// [domain] - domain for which the cookie is valid (defaults to domain of calling document)
// [secure] - Boolean value indicating if the cookie transmission requires a secure transmission
// * an argument defaults when it is assigned null as a placeholder
// * a null placeholder is not required for trailing omitted arguments
function SetCookie(name, value, expires, path, domain, secure) 
{
   var curCookie = name + "=" + escape(value) +
      ((expires) ? "; expires=" + expires : "") +
      ((path) ? "; path=" + path : "") +
      ((domain) ? "; domain=" + domain : "") +
      ((secure) ? "; secure" : "");
   document.cookie = curCookie;
}



// Popup window
function popupNewsletter(mylink, windowname)
{
   if(! window.focus)
      return true;
   var href;
   if( typeof( mylink ) == 'string' )
      href = mylink;
   else
      href = mylink.href;
   window.open( href, windowname, 'width=670,height=600,scrollbars=yes,left=172,top=84' );
   return false;
}