/* onload functions */

function addDropShadow(selector) {
	var imgs = document.getElementsBySelector(selector);
	for(var i=0; i < imgs.length; i++) {

		if(imgs[i] === null) {
			continue
		}

		var wrap = document.createElement('span');
		wrap.className = "shadow";
		wrap.style.width = imgs[i].width + "px";
		wrap.style.height = imgs[i].height + "px";

		imgs[i].parentNode.appendChild(wrap);
	}
}

function makeGreetingsActive(selector) {
	var greets = document.getElementsBySelector(selector);
	for(var i=0; i < greets.length; i++) {
		greets[i].onclick = function() { document.getElementById(this.id.substr(1)).checked = true; }
		img = greets[i].getElementsByTagName("img");
		if(img.length > 0) {
			greets[i].largeImage = img[0];
			greets[i].onmouseover = function() {
				this.largeImage.style.display = "block";
			}

			greets[i].onmouseout = function() {
				this.largeImage.style.display = "none";
			}
		}
	}

	var ta = document.getElementById("personalized");
	if(ta) {
		ta.onclick = function() { document.getElementById("gPERSONALIZED").checked = true; }
	}
}

function preserveQuantities() {
	if(document.getElementsBySelector("#catLev select").length > 0) {
		var lis = document.getElementsBySelector("#catLev li");
		for(var i=0; i<lis.length; i++) {
			var select = lis[i].getElementsByTagName("select")[0];
			var link = lis[i].getElementsByTagName("a")[0];
			link.quantity = 1;
			select.link = link;
			select.onchange = function() { this.link.quantity = this.value; }
			link.onclick = function() {
			   	this.href = this.href + "&quantity=" + this.quantity; 
			}
		}
	}
}

window.onload = function() {

	addDropShadow("ul.itemlist img");
	addDropShadow("#mainProductImage");

	makeGreetingsActive("#greetings li");
	makeGreetingsActive("#colors div");

	preserveQuantities();

	var imprint = document.getElementById("imprinting");
	var impDetails = document.getElementById("imprintdetails");

	if(imprint && impDetails) {
		impDetails.style.display = "none";
		imprint.onclick = function() {
			if(this.checked) { impDetails.style.display = "block"; }
			else { impDetails.style.display = "none"; }
		};
	}
}

function validateAdd( form ) {
	if( form.type.value == "gift" ) {
		var answer = true;
		if( form.details.value == "" ) {
			answer = confirm("Are you sure you want a blank enclosure card?");
		}

		if( answer && form.delivery_date.value == "") {
			return confirm( "Are you sure you want this shipped immediately?");
		} else {
			return answer;
		}

	}
	else if( form.imprintRequired  && form.details.value == "") {
		alert("Order here only if you need card or envelope imprinting. If you are not ordering imprinted materials, contact the Support Services Help Desk for ordering instructions.\n1-800-294-2911 (option 4)\n SupportSvcHD@BBandT.com");
		return false;
	}


	return true;
}

function initLogoButton() {
	check = document.getElementById("add_logo");
	check.onclick = function() {
		fs = document.getElementById("file_select");
		if(this.checked == true) {
			fs.style.display = "block";
		} else {
			fs.style.display = "none";
		}
	}
	ok = document.getElementById("ok");
	ok.onclick = function() {
		lf =  document.getElementById("logo_file");
		if(lf.value == '') {
			check = document.getElementById("add_logo");
			check.checked = false;
		}
		this.parentNode.style.display = "none";
	}

	gf = document.getElementById("greetingForm");
	gf.onsubmit = function() { 
		if(this.add_logo.checked && this.logo_file.value != '') {
			this.method = "post";
		} else {
			fs =  document.getElementById("logo_file");
			fs.parentNode.removeChild(fs);
			this.enctype = "application/x-www-form-urlencoded";
		}

		return true;
	}
}

function validateCart() {
	var q = document.getElementsBySelector("#cart input.quantity");
	for(var i=0; i < q.length; i++) {
		if( ! /^\d+$/.test(q[i].value) ) {
			alert(q[i].value + " is not a valid quantity. \n\n All the quantities must be integers. If you wish to remove an item from your cart, you may enter 0 or use the \"Remove\" checkbox.");
			return false;
		}
	}

	return true;
}


/*
everything below this point is Simon Willison's getElementsBySelector script,
located on his site: http://simon.incutio.com/archive/2003/03/25/getElementsBySelector
*/

/* document.getElementsBySelector(selector)
   - 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.getElementsBySelector('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();
      }
	  if(!element) {
		  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
*/