function emailLink() {
	var argv = emailLink.arguments;
	return '<a href="mailto:'+argv[0]+'@'+argv[1]+'.'+argv[2]+'">'+((argv[3]) ? argv[3] : argv[0]+'@'+argv[1]+'.'+argv[2])+'</a>';
}

/*

function $(id) {
	return document.getElementById(id);
}

*/

function toggleTabs(link, which) {
	div = link.parentNode.parentNode;
	products_div = document.getElementById('products_content');
	manufacturers_div = document.getElementById('manufacturers_content');
	
	switch(which) {
		case 'products':
			div.className = 'products';
			products_div.style.display = '';
			manufacturers_div.style.display = 'none';
			break;
		case 'manufacturers':
			div.className = 'manufacturers';
			products_div.style.display = 'none';
			manufacturers_div.style.display = '';
			break;			
	}
	
	if(link.blur) link.blur();
}

function toggleManufacturer(which) {
	selectbox = document.getElementById('manufacturer_select');	
	textbox = document.getElementById('manufacturer_text')

	switch(which) {
		case 'text':
			selectbox.style.display = 'none';
			selectbox.disabled = 'disabled';
			selectbox.selectedIndex = 0;			
			textbox.style.display = '';
			textbox.childNodes[0].disabled = '';
			break;
		case 'select':
			textbox.style.display = 'none';
			textbox.childNodes[0].disabled = 'disabled';
			selectbox.style.display = '';		
			selectbox.disabled = '';
			break;
	}
}

function disable(input) { input.disabled = "disabled"; }
function enable(input) { input.disabled = ""; }
function hide(element) { element.style.display = "none"; }
function show(element) { element.style.display = ""; }

function changeCategoryField(switch_to, node) {
	elements = new Array(
		node.getElementsByTagName('a'),
		node.getElementsByTagName('input'),
		node.getElementsByTagName('select')
	);
		
	for(x=0; x<elements.length; x++) {
		for(i=0; i<elements[x].length; i++) {
			if(switch_to == 'text') {			
			
				if(elements[x][i].id.match(/^category_text_link/)) {
					show(elements[x][i]);
				}
				
				else if(elements[x][i].id.match(/^category_text/)) {
					enable(elements[x][i]);
					show(elements[x][i]);					
				}
				
				else if(elements[x][i].id.match(/^category_select/)) {
					disable(elements[x][i]);
					hide(elements[x][i]);
					elements[x][i].selectedIndex = 0;
				}
				
			} else {

				if(elements[x][i].id.match(/^category_text_link/)) {
					hide(elements[x][i]);
				}
				
				else if(elements[x][i].id.match(/^category_text/)) {
					disable(elements[x][i]);
					hide(elements[x][i]);					
				}
				
				else if(elements[x][i].id.match(/^category_select/)) {
					enable(elements[x][i]);
					show(elements[x][i]);
				}
				
			}			
		}
	}
}

window.total_pdf_fields = 1;

function addPDF(href) {
	window.total_pdf_fields++;
	total_pdf_fields = window.total_pdf_fields;
	currentTbl = href.parentNode.parentNode.parentNode;
	newTbl = currentTbl.cloneNode(true);
	newTbl.getElementsByTagName('a')[0].style.display = 'none';
	newTbl.getElementsByTagName('a')[1].id += '_'+total_pdf_fields;	
	newTbl.getElementsByTagName('input')[0].value = '';
	newTbl.getElementsByTagName('input')[0].name += '_'+total_pdf_fields;
	newTbl.getElementsByTagName('input')[1].value = '';	
	newTbl.getElementsByTagName('input')[1].name += '_'+total_pdf_fields;
	newTbl.getElementsByTagName('input')[2].name += '_'+total_pdf_fields;	
	newTbl.getElementsByTagName('select')[0].name += '_'+total_pdf_fields;
	newTbl.getElementsByTagName('input')[1].id += '_'+total_pdf_fields;
	newTbl.getElementsByTagName('select')[0].id += '_'+total_pdf_fields;	
	currentTbl.parentNode.appendChild(newTbl);	
}
// Style switch functions

function changeFontSize(change) {
	var styles = new Array('font-small', 'font-medium', 'font-large');
	var keys = {'font-small' : 0, 'font-medium' : 1, 'font-large' : 2};

	current_size = getActiveStyleSheet();
	if(current_size == null) {
		setActiveStyleSheet('font-small');
		current_size = getActiveStyleSheet();		
	}
	
	size_number = keys[current_size];
		
	if(change == 'increase') {
		new_size = (size_number + 1);
		if(new_size > (styles.length - 1)) new_size = (styles.length - 1);
	}	
	else if(change == 'decrease') {
		new_size = (size_number - 1);		
		if(new_size < 0) new_size = 0;
	}
	
	new_style = styles[new_size];	
	setActiveStyleSheet(new_style);
}

function setActiveStyleSheet(title) {
  var i, a, main;
  for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
    if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title")) {
      a.disabled = true;
      if(a.getAttribute("title") == title) a.disabled = false;
    }
  }
}

function getActiveStyleSheet() {
  var i, a;
  for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
    if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title") && !a.disabled) return a.getAttribute("title");
  }
  return null;
}

function getPreferredStyleSheet() {
  var i, a;
  for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
    if(a.getAttribute("rel").indexOf("style") != -1
       && a.getAttribute("rel").indexOf("alt") == -1
       && a.getAttribute("title")
       ) return a.getAttribute("title");
  }
  return null;
}

function createCookie(name,value,days) {
  if (days) {
    var date = new Date();
    date.setTime(date.getTime()+(days*24*60*60*1000));
    var expires = "; expires="+date.toGMTString();
  }
  else expires = "";
  document.cookie = name+"="+value+expires+"; path=/";
}

function readCookie(name) {
  var nameEQ = name + "=";
  var ca = document.cookie.split(';');
  for(var i=0;i < ca.length;i++) {
    var c = ca[i];
    while (c.charAt(0)==' ') c = c.substring(1,c.length);
    if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
  }
  return null;
}

window.onload = function(e) {
  var cookie = readCookie("style");
  var title = cookie ? cookie : getPreferredStyleSheet();
  setActiveStyleSheet(title);
}

window.onunload = function(e) {
  var title = getActiveStyleSheet();
  createCookie("style", title, 365);
}

var cookie = readCookie("style");
var title = cookie ? cookie : getPreferredStyleSheet();
setActiveStyleSheet(title);