var edButtons = new Array();
var edLinks = new Array();
var edOpenTags = new Array();

var countries = {
  us: 'amazon.com',
  uk: 'amazon.co.uk',
  ca: 'amazon.ca',
  de: 'amazon.de',
  fr: 'amazon.fr'
};

function edButton(id, title, display, tagStart, tagEnd, open) {
	this.id = id;				// used to name the toolbar button
    this.title = title;           // title on button when hovered on
	this.display = display;		// label on button
	this.tagStart = tagStart; 	// open tag
	this.tagEnd = tagEnd;		// close tag
	this.open = open;			// set to -1 if tag does not need to be closed
}

edButtons[edButtons.length] = new edButton('ed_bold'
                                          ,'bold'
                                          ,''
                                          ,'<strong>'
                                          ,'</strong>'
                                          );

edButtons[edButtons.length] = new edButton('ed_italic'
                                          ,'italic'
                                          ,''
                                          ,'<em>'
                                          ,'</em>'
                                          );

edButtons[edButtons.length] = new edButton('ed_link'
                                          ,'add link to comment'
                                          ,''
                                          ,''
                                          ,'</a>'
                                          ); // special case
edButtons[edButtons.length] = new edButton('ed_image'
                                          ,'add image to comment'
                                          ,''
                                          ,''
                                          ,' '
                                          ); // special case

function edShowButton(button, i) {
	if (button.id == 'ed_link') {
		document.write('<input type="button" id="' + button.id + '" class="ed_button" title="' + button.title + '" onclick="edInsertLink(edCanvas, ' + i + ');" value="' + button.display + '" /> URL&#160;&#160;&#160;&#160;&#160;');
	}
  else if (button.id == 'ed_image') {
	document.write('<input type="button" id="' + button.id + '" class="ed_button" title="' + button.title + '" onclick="edInsertImage(edCanvas, ' + i + ');" value="' + button.display + '" /> photo');
  }
	else if (button.id == 'ed_bold') {
		document.write('&#160;<strong>options:</strong>&#160;&#160;&#160;&#160;&#160;<input type="button" id="' + button.id + '" class="ed_button" title="' + button.title + '" onclick="edInsertTag(edCanvas, ' + i + ');" value="' + button.display + '" /> ' + button.title + '&#160;&#160;&#160;&#160;&#160;');
	}
	else {
		document.write('<input type="button" id="' + button.id + '" class="ed_button" title="' + button.title + '" onclick="edInsertTag(edCanvas, ' + i + ');" value="' + button.display + '" /> ' + button.title + '&#160;&#160;&#160;&#160;&#160;');
	}
}

function edAddTag(button) {
	if (edButtons[button].tagEnd != '') {
		edOpenTags[edOpenTags.length] = button;
		document.getElementById(edButtons[button].id).value = '' + document.getElementById(edButtons[button].id).value;
	}
}

function edRemoveTag(button) {
	for (i = 0; i < edOpenTags.length; i++) {
		if (edOpenTags[i] == button) {
			edOpenTags.splice(i, 1);
			document.getElementById(edButtons[button].id).value = document.getElementById(edButtons[button].id).value.replace('/', '');
		}
	}
}

function edCheckOpenTags(button) {
	var tag = 0;
	for (i = 0; i < edOpenTags.length; i++) {
		if (edOpenTags[i] == button) {
			tag++;
		}
	}
	if (tag > 0) {
		return true; // tag found
	}
	else {
		return false; // tag not found
	}
}	

function edCloseAllTags() {
	var count = edOpenTags.length;
	for (o = 0; o < count; o++) {
		edInsertTag(edCanvas, edOpenTags[edOpenTags.length - 1]);
	}
}

function edToolbar() {
	document.write('<div id="ed_toolbar">');
	for (i = 0; i < edButtons.length; i++) {
		edShowButton(edButtons[i], i);
	}
	document.write('<input type="button" id="ed_close" class="ed_button" title="close all tags" onclick="edCloseAllTags();" value="" /> close all tags');
	document.write('</div>');
}

function sort_by_to_relevance() {
  if (document.amazon_discount.keywords.value != '' &&
      document.amazon_discount.sort.selectedIndex == 0) {
    document.amazon_discount.sort.selectedIndex = 1;
  }
}
function add_sort_by_to_relevance() {
  document.amazon_discount.keywords.onfocus=sort_by_to_relevance;
  document.amazon_discount.keywords.onblur=sort_by_to_relevance;
  document.amazon_discount.keywords.onkeypress=sort_by_to_relevance;
  document.amazon_discount.keywords.onkeyup=sort_by_to_relevance;
}
function country_change() {
  var country = get_country();
  for (var node_country in countries) {
    document.getElementById('node-' + node_country).style.display = (node_country == country) ?
      '' : 'none';
  }
}
function get_country() {
  var country;
  for (var x=0;x<document.amazon_discount.country.length;x++) {
    if (document.amazon_discount.country[x].checked) {
      country = document.amazon_discount.country[x].value;
      break;
    }
  }
  return country;
}
function prepare_form() {
  add_sort_by_to_relevance();
  country_change();
}
function find_amazon_discounts()
{
var c = null;
if(document.amazon_discount.prime.checked == true)
var c = document.amazon_discount.prime.value;
else
var c="";
var d= null;
if(document.amazon_discount.keywords.value != null)
d="&keywords="+document.amazon_discount.keywords.value;
var country = get_country();
var domain = countries[country];
var node_ele = document.getElementById('node-' + country);
var node = node_ele.options[node_ele.selectedIndex].value;
window.open('http://' + domain + '/gp/search/?node='+ encodeURIComponent(node) +'&pct-off='+ document.amazon_discount.from.value +'-'+ document.amazon_discount.to.value + c +'&tag=mygsh-20'+ document.amazon_discount.sort.value + d )
}

// insertion code

function edInsertTag(myField, i) {
	//IE support
	if (document.selection) {
		myField.focus();
	    sel = document.selection.createRange();
		if (sel.text.length > 0) {
			sel.text = edButtons[i].tagStart + sel.text + edButtons[i].tagEnd;
		}
		else {
			if (!edCheckOpenTags(i) || edButtons[i].tagEnd == '') {
				sel.text = edButtons[i].tagStart;
				edAddTag(i);
			}
			else {
				sel.text = edButtons[i].tagEnd;
				edRemoveTag(i);
			}
		}
		myField.focus();
	}
	//MOZILLA/NETSCAPE support
	else if (myField.selectionStart || myField.selectionStart == '0') {
		var startPos = myField.selectionStart;
		var endPos = myField.selectionEnd;
		var cursorPos = endPos;
		if (startPos != endPos) {
			myField.value = myField.value.substring(0, startPos)
			              + edButtons[i].tagStart
			              + myField.value.substring(startPos, endPos) 
			              + edButtons[i].tagEnd
			              + myField.value.substring(endPos, myField.value.length);
			cursorPos += edButtons[i].tagStart.length + edButtons[i].tagEnd.length;
		}
		else {
			if (!edCheckOpenTags(i) || edButtons[i].tagEnd == '') {
				myField.value = myField.value.substring(0, startPos) 
				              + edButtons[i].tagStart
				              + myField.value.substring(endPos, myField.value.length);
				edAddTag(i);
				cursorPos = startPos + edButtons[i].tagStart.length;
			}
			else {
				myField.value = myField.value.substring(0, startPos) 
				              + edButtons[i].tagEnd
				              + myField.value.substring(endPos, myField.value.length);
				edRemoveTag(i);
				cursorPos = startPos + edButtons[i].tagEnd.length;
			}
		}
		myField.focus();
		myField.selectionStart = cursorPos;
		myField.selectionEnd = cursorPos;
	}
	else {
		if (!edCheckOpenTags(i) || edButtons[i].tagEnd == '') {
			myField.value += edButtons[i].tagStart;
			edAddTag(i);
		}
		else {
			myField.value += edButtons[i].tagEnd;
			edRemoveTag(i);
		}
		myField.focus();
	}
}

function edInsertContent(myField, myValue) {
	//IE support
	if (document.selection) {
		myField.focus();
		sel = document.selection.createRange();
		sel.text = myValue;
		myField.focus();
	}
	//MOZILLA/NETSCAPE support
	else if (myField.selectionStart || myField.selectionStart == '0') {
		var startPos = myField.selectionStart;
		var endPos = myField.selectionEnd;
		myField.value = myField.value.substring(0, startPos)
		              + myValue 
                      + myField.value.substring(endPos, myField.value.length);
		myField.focus();
		myField.selectionStart = startPos + myValue.length;
		myField.selectionEnd = startPos + myValue.length;
	} else {
		myField.value += myValue;
		myField.focus();
	}
}

function edInsertLink(myField, i, defaultValue) {
	if (!defaultValue) {
		defaultValue = 'http://';
	}
	if (!edCheckOpenTags(i)) {
		var URL = prompt('Enter the URL' ,defaultValue);
		if (URL) {
			edButtons[i].tagStart = '<a href="' + URL + '">';
			edInsertTag(myField, i);
		}
	}
	else {
		edInsertTag(myField, i);
	}
}

function edInsertImage(myField, i, defaultValue) {
	if (!defaultValue) {
		defaultValue = 'http://';
	}
	if (!edCheckOpenTags(i)) {
		var URL = prompt('Enter URL of an image (maximum width = 600 pixels)' ,defaultValue);
		if (URL) {
			edButtons[i].tagStart = '<img src="' + URL + '" />';
			edInsertTag(myField, i);
		}
	}
	else {
		edInsertTag(myField, i);
	}
}

function find_my_gshock()
{
var d1= null;
var d2= null;
var d3= null;
var d4= null;
if(document.gshock_pick.keywords1.value != null)
d1="pick1="+document.gshock_pick.keywords1.value;
if(document.gshock_pick.keywords2.value != null)
d2="&pick2="+document.gshock_pick.keywords2.value;
if(document.gshock_pick.keywords3.value != null)
d3="&pick3="+document.gshock_pick.keywords3.value;
if(document.gshock_pick.keywords4.value != null)
d4="&pick4="+document.gshock_pick.keywords4.value;
window.open('http://watchshock.com/what_to_buy.php?' + d1 + d2 + d3 + d4 )
}

function MultiSelector( list_target, max ){this.list_target = list_target;this.count = 0;this.id = 0;if( max ){this.max = max;} else {this.max = -1;};this.addElement = function( element ){if( element.tagName == 'INPUT' && element.type == 'file' ){element.name = 'file_' + this.id++;element.multi_selector = this;element.onchange = function(){var new_element = document.createElement( 'input' );new_element.type = 'file';this.parentNode.insertBefore( new_element, this );this.multi_selector.addElement( new_element );this.multi_selector.addListRow( this );this.style.position = 'absolute';this.style.left = '-1000px';};if( this.max != -1 && this.count >= this.max ){element.disabled = true;};this.count++;this.current_element = element;} else {alert( 'Error: not a file input element' );};};this.addListRow = function( element ){var new_row = document.createElement( 'div' );var new_row_button = document.createElement( 'input' );new_row_button.type = 'button';new_row_button.value = 'Delete';new_row.element = element;new_row_button.onclick= function(){this.parentNode.element.parentNode.removeChild( this.parentNode.element );this.parentNode.parentNode.removeChild( this.parentNode );this.parentNode.element.multi_selector.count--;this.parentNode.element.multi_selector.current_element.disabled = false;return false;};new_row.innerHTML = element.value;new_row.appendChild( new_row_button );this.list_target.appendChild( new_row );};};

function sack(file) {
	this.xmlhttp = null;

	this.resetData = function() {
		this.method = "POST";
  		this.queryStringSeparator = "?";
		this.argumentSeparator = "&";
		this.URLString = "";
		this.encodeURIString = true;
  		this.execute = false;
  		this.element = null;
		this.elementObj = null;
		this.requestFile = file;
		this.vars = new Object();
		this.responseStatus = new Array(2);
  	};

	this.resetFunctions = function() {
  		this.onLoading = function() { };
  		this.onLoaded = function() { };
  		this.onInteractive = function() { };
  		this.onCompletion = function() { };
  		this.onError = function() { };
		this.onFail = function() { };
	};

	this.reset = function() {
		this.resetFunctions();
		this.resetData();
	};

	this.createAJAX = function() {
		try {
			this.xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
		} catch (e1) {
			try {
				this.xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
			} catch (e2) {
				this.xmlhttp = null;
			}
		}

		if (! this.xmlhttp) {
			if (typeof XMLHttpRequest != "undefined") {
				this.xmlhttp = new XMLHttpRequest();
			} else {
				this.failed = true;
			}
		}
	};

	this.setVar = function(name, value){
		this.vars[name] = Array(value, false);
	};

	this.encVar = function(name, value, returnvars) {
		if (true == returnvars) {
			return Array(encodeURIComponent(name), encodeURIComponent(value));
		} else {
			this.vars[encodeURIComponent(name)] = Array(encodeURIComponent(value), true);
		}
	}

	this.processURLString = function(string, encode) {
		encoded = encodeURIComponent(this.argumentSeparator);
		regexp = new RegExp(this.argumentSeparator + "|" + encoded);
		varArray = string.split(regexp);
		for (i = 0; i < varArray.length; i++){
			urlVars = varArray[i].split("=");
			if (true == encode){
				this.encVar(urlVars[0], urlVars[1]);
			} else {
				this.setVar(urlVars[0], urlVars[1]);
			}
		}
	}

	this.createURLString = function(urlstring) {
		if (this.encodeURIString && this.URLString.length) {
			this.processURLString(this.URLString, true);
		}

		if (urlstring) {
			if (this.URLString.length) {
				this.URLString += this.argumentSeparator + urlstring;
			} else {
				this.URLString = urlstring;
			}
		}

		// prevents caching of URLString
		this.setVar("rndval", new Date().getTime());

		urlstringtemp = new Array();
		for (key in this.vars) {
			if (false == this.vars[key][1] && true == this.encodeURIString) {
				encoded = this.encVar(key, this.vars[key][0], true);
				delete this.vars[key];
				this.vars[encoded[0]] = Array(encoded[1], true);
				key = encoded[0];
			}

			urlstringtemp[urlstringtemp.length] = key + "=" + this.vars[key][0];
		}
		if (urlstring){
			this.URLString += this.argumentSeparator + urlstringtemp.join(this.argumentSeparator);
		} else {
			this.URLString += urlstringtemp.join(this.argumentSeparator);
		}
	}

	this.runResponse = function() {
		eval(this.response);
	}

	this.runAJAX = function(urlstring) {
		if (this.failed) {
			this.onFail();
		} else {
			this.createURLString(urlstring);
			if (this.element) {
				this.elementObj = document.getElementById(this.element);
			}
			if (this.xmlhttp) {
				var self = this;
				if (this.method == "GET") {
					totalurlstring = this.requestFile + this.queryStringSeparator + this.URLString;
					this.xmlhttp.open(this.method, totalurlstring, true);
				} else {
					this.xmlhttp.open(this.method, this.requestFile, true);
					try {
						this.xmlhttp.setRequestHeader("Content-Type", "application/x-www-form-urlencoded")
					} catch (e) { }
				}

				this.xmlhttp.onreadystatechange = function() {
					switch (self.xmlhttp.readyState) {
						case 1:
							self.onLoading();
							break;
						case 2:
							self.onLoaded();
							break;
						case 3:
							self.onInteractive();
							break;
						case 4:
							self.response = self.xmlhttp.responseText;
							self.responseXML = self.xmlhttp.responseXML;
							self.responseStatus[0] = self.xmlhttp.status;
							self.responseStatus[1] = self.xmlhttp.statusText;

							if (self.execute) {
								self.runResponse();
							}

							if (self.elementObj) {
								elemNodeName = self.elementObj.nodeName;
								elemNodeName.toLowerCase();
								if (elemNodeName == "input"
								|| elemNodeName == "select"
								|| elemNodeName == "option"
								|| elemNodeName == "textarea") {
									self.elementObj.value = self.response;
								} else {
									self.elementObj.innerHTML = self.response;
								}
							}
							if (self.responseStatus[0] == "200") {
								self.onCompletion();
							} else {
								self.onError();
							}

							self.URLString = "";
							break;
					}
				};

				this.xmlhttp.send(this.URLString);
			}
		}
	};

	this.reset();
	this.createAJAX();
}