function zipcookie(boxName,zid,catid) {
 if(!catid) {
  catid = false;
 }
 var pidAr = []; var found = false; var zcookie=getCookie("zids");

 if(zcookie) {
  var newcookie = ""; var findcomma = "";
  //Cookie found, process it
  findcomma = zcookie.indexOf(',');
  if(findcomma == -1) { pidAr.push(zcookie); }
  else { pidAr = zcookie.split(','); }
  var first = true;
  for (cpid in pidAr) {
   if(cpid != 'indexOf') {
    if(pidAr[cpid] == zid) {
     found = cpid;
    } else {
     if(first) {
	  newcookie = pidAr[cpid];
	  first = false;
	 } else {
      newcookie = newcookie+","+pidAr[cpid];
     }
    }
   }
  }  // If it was found, found will contain it's index, else found will be false. newcookie will contain everything else.
  if(found) {
   if(boxName.checked) { return true; } //the value was found, and it was to be added. Do nothing, return true.
   else {
    //the value was found, and it is to be removed. setcookie to the everything else. return true.
								setCookie("zids",newcookie,7,"/");
    if(catid) {
	 zipcatch(boxName);
	}
	return true;
	//HEY WE NEED TO CHECK FOR ALL CATCH
   }
  } else { //it was not found in the list. newcookie has the cookie's current values
  
   if(boxName.checked) {
								setCookie("zids",newcookie+","+zid,7,"/");
	if(catid) {
	 zipcatch(boxName);
	}
	return true;
	//HEY WE NEED TO CHECK FOR ALL CATCH
   } //add it to the cookie. return true.
   else { return false; } //was not found, and it was to be removed. Doesn't make sense, return false.
  }
 } else { //there is no spoon
  if(boxName.checked) { //there is no cookie, it was checked for add. set cookie and return true.
								setCookie("zids",zid,7,"/");
    if(catid) {
	 zipcatch(boxName);
	}
   return true;
  }
  else { return false; } //there is no cookie, and there is to be a subtraction. Doesn't make sense, return false.
 }
 alert("Error:How did you do this?");
 return false;
}
function setCookie( name, value, expires, path, domain, secure )
{
 var today = new Date();
 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 getCookie(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 check_zip() {
 var zcookie = getCookie("zids");
 if(zcookie) {
  if(zcookie != "") {
   return true;
  }
 }
 return false;
}
/* document.getElementsBySelector(selector)
  http://simonwillison.net/static/2003/getElementsBySelector.js 
   - returns an array of element objects from the current document
     matching the CSS selector. Selectors can contain element names, 
     class names and ids and can be nested. For example:
     
       elements = document.getElementsBySelect('div#main p a.external')
     
     Will return an array of all 'a' elements with 'external' in their 
     class attribute that are contained inside 'p' elements that are 
     contained inside the 'div' element which has id="main"

   New in version 0.4: Support for CSS2 and CSS3 attribute selectors:
   See http://www.w3.org/TR/css3-selectors/#attribute-selectors

   Version 0.4 - Simon Willison, March 25th 2003
   -- Works in Phoenix 0.5, Mozilla 1.3, Opera 7, Internet Explorer 6, Internet Explorer 5 on Windows
   -- Opera 7 fails 
*/

function getAllChildren(e) {
  // Returns all children of element. Workaround required for IE5/Windows. Ugh.
  return e.all ? e.all : e.getElementsByTagName('*');
}

document.getElementsBySelector = function(selector) {
  // Attempt to fail gracefully in lesser browsers
  if (!document.getElementsByTagName) {
    return new Array();
  }
  // Split selector in to tokens
  var tokens = selector.split(' ');
  var currentContext = new Array(document);
  for (var i = 0; i < tokens.length; i++) {
    var token = tokens[i].replace(/^\s+/,'').replace(/\s+$/,'');;
    if (token.indexOf('#') > -1) {
      // Token is an ID selector
      var bits = token.split('#');
      var tagName = bits[0];
      var id = bits[1];
      var element = document.getElementById(id);
      if (tagName && element.nodeName.toLowerCase() != tagName) {
        // tag with that ID not found, return false
        return new Array();
      }
      // Set currentContext to contain just this element
      currentContext = new Array(element);
      continue; // Skip to next token
    }
    if (token.indexOf('.') > -1) {
      // Token contains a class selector
      var bits = token.split('.');
      var tagName = bits[0];
      var className = bits[1];
      if (!tagName) {
        tagName = '*';
      }
      // Get elements matching tag, filter them for class selector
      var found = new Array;
      var foundCount = 0;
      for (var h = 0; h < currentContext.length; h++) {
        var elements;
        if (tagName == '*') {
            elements = getAllChildren(currentContext[h]);
        } else {
            elements = currentContext[h].getElementsByTagName(tagName);
        }
        for (var j = 0; j < elements.length; j++) {
          found[foundCount++] = elements[j];
        }
      }
      currentContext = new Array;
      var currentContextIndex = 0;
      for (var k = 0; k < found.length; k++) {
        if (found[k].className && found[k].className.match(new RegExp('\\b'+className+'\\b'))) {
          currentContext[currentContextIndex++] = found[k];
        }
      }
      continue; // Skip to next token
    }
    // Code to deal with attribute selectors
    if (token.match(/^(\w*)\[(\w+)([=~\|\^\$\*]?)=?"?([^\]"]*)"?\]$/)) {
      var tagName = RegExp.$1;
      var attrName = RegExp.$2;
      var attrOperator = RegExp.$3;
      var attrValue = RegExp.$4;
      if (!tagName) {
        tagName = '*';
      }
      // Grab all of the tagName elements within current context
      var found = new Array;
      var foundCount = 0;
      for (var h = 0; h < currentContext.length; h++) {
        var elements;
        if (tagName == '*') {
            elements = getAllChildren(currentContext[h]);
        } else {
            elements = currentContext[h].getElementsByTagName(tagName);
        }
        for (var j = 0; j < elements.length; j++) {
          found[foundCount++] = elements[j];
        }
      }
      currentContext = new Array;
      var currentContextIndex = 0;
      var checkFunction; // This function will be used to filter the elements
      switch (attrOperator) {
        case '=': // Equality
          checkFunction = function(e) { return (e.getAttribute(attrName) == attrValue); };
          break;
        case '~': // Match one of space seperated words 
          checkFunction = function(e) { return (e.getAttribute(attrName).match(new RegExp('\\b'+attrValue+'\\b'))); };
          break;
        case '|': // Match start with value followed by optional hyphen
          checkFunction = function(e) { return (e.getAttribute(attrName).match(new RegExp('^'+attrValue+'-?'))); };
          break;
        case '^': // Match starts with value
          checkFunction = function(e) { return (e.getAttribute(attrName).indexOf(attrValue) == 0); };
          break;
        case '$': // Match ends with value - fails with "Warning" in Opera 7
          checkFunction = function(e) { return (e.getAttribute(attrName).lastIndexOf(attrValue) == e.getAttribute(attrName).length - attrValue.length); };
          break;
        case '*': // Match ends with value
          checkFunction = function(e) { return (e.getAttribute(attrName).indexOf(attrValue) > -1); };
          break;
        default :
          // Just test for existence of attribute
          checkFunction = function(e) { return e.getAttribute(attrName); };
      }
      currentContext = new Array;
      var currentContextIndex = 0;
      for (var k = 0; k < found.length; k++) {
        if (checkFunction(found[k])) {
          currentContext[currentContextIndex++] = found[k];
        }
      }
      // alert('Attribute Selector: '+tagName+' '+attrName+' '+attrOperator+' '+attrValue);
      continue; // Skip to next token
    }
    // If we get here, token is JUST an element (not a class or ID selector)
    tagName = token;
    var found = new Array;
    var foundCount = 0;
    for (var h = 0; h < currentContext.length; h++) {
      var elements = currentContext[h].getElementsByTagName(tagName);
      for (var j = 0; j < elements.length; j++) {
        found[foundCount++] = elements[j];
      }
    }
    currentContext = found;
  }
  return currentContext;
}

/* That revolting regular expression explained 
/^(\w+)\[(\w+)([=~\|\^\$\*]?)=?"?([^\]"]*)"?\]$/
  \---/  \---/\-------------/    \-------/
    |      |         |               |
    |      |         |           The value
    |      |    ~,|,^,$,* or =
    |   Attribute 
   Tag
*/


function zipcatch(bName) {
 if(bName == "--clearcookie--") {
  var aele = document.getElementsBySelector('input.zclearme');
  for (item in aele) {
   aele[item].checked = false;
  }
 } else if(bName.checked){
  var aele = document.getElementsBySelector('input.'+bName.className.slice(0,bName.className.indexOf(' ')));
  for (item in aele) {
   aele[item].checked = true;
  }
 } else {
  var aele = document.getElementsBySelector('input.'+bName.className.slice(0,bName.className.indexOf(' ')));
  for (item in aele) {
   aele[item].checked = false;
  }
 }
 return true;
}

function zipclearcookie() {
   setCookie("zids","",7,"/");
   zipcatch("--clearcookie--");
}