//Extensions to effects, functions, etc.
function eraseCookie(name) {
	setCookie(name,"",-1);
}

function getCookie(c_name)
{
if (document.cookie.length>0)
  {
  c_start=document.cookie.indexOf(c_name + "=")
  if (c_start!=-1)
    { 
    c_start=c_start + c_name.length+1 
    c_end=document.cookie.indexOf(";",c_start)
    if (c_end==-1) c_end=document.cookie.length
    return unescape(document.cookie.substring(c_start,c_end))
    } 
  }
return null
}

function setCookie(c_name,value,expiredays)
{
	var exdate=new Date()
	exdate.setDate(exdate.getDate()+expiredays)
	document.cookie=c_name+ "=" +escape(value)+
	((expiredays==null) ? "" : ";expires="+exdate)
}


function checkCookie()
{
	
	Effect.toggle('leftcol_archive', 'appear');
/*	
username=getCookie('viewarchive')
if (username=='true')
  { 
	Effect.toggle('leftcol_archive', 'appear');
	}*/
}

function toggleCookie() 
{
	
	username = getCookie('viewarchive');
	if (username == 'true') {
		setCookie('viewarchive','false',365);
	} else {
		setCookie('viewarchive','true',365);
	}
	Effect.toggle('leftcol_archive', 'appear');
}


//change background color of element
Element.setBackgroundColor = function(element, color) {  
  $(element).style.backgroundColor = color;
}

//return true for checked radio, false for unchecked
Element.checked = function(element) {
	return $(element).checked;
}

//toggle background color of element depending on True/False of condition
Element.toggleBackgroundColor = function(element, color1, color2, condition) {  
  if (condition) {  Element.setBackgroundColor(element,color1);}
  else {  Element.setBackgroundColor(element,color2);}
}


Effect.QuickSlideDown = function(element) {
  element = $(element);
  Element.cleanWhitespace(element);
  // SlideDown need to have the content of the element wrapped in a container element with fixed height!
  var oldInnerBottom = Element.getStyle(element.firstChild, 'bottom');
  var elementDimensions = Element.getDimensions(element);
  return new Effect.Scale(element, 100, Object.extend({ 
	duration: .2,												  
    scaleContent: false, 
    scaleX: false, 
    scaleFrom: 0,
    scaleMode: {originalHeight: elementDimensions.height, originalWidth: elementDimensions.width},
    restoreAfterFinish: true,
    afterSetup: function(effect) { with(Element) {
      makePositioned(effect.element);
      makePositioned(effect.element.firstChild);
      if(window.opera) setStyle(effect.element, {top: ''});
      makeClipping(effect.element);
      setStyle(effect.element, {height: '0px'});
      show(element); }},
    afterUpdateInternal: function(effect) { with(Element) {
      setStyle(effect.element.firstChild, {bottom:
        (effect.dims[0] - effect.element.clientHeight) + 'px' }); }},
    afterFinishInternal: function(effect) { with(Element) {
      undoClipping(effect.element); 
      // IE will crash if child is undoPositioned first
      if(/MSIE/.test(navigator.userAgent)){
        undoPositioned(effect.element);
        undoPositioned(effect.element.firstChild);
      }else{
        undoPositioned(effect.element.firstChild);
        undoPositioned(effect.element);
      }
      setStyle(effect.element.firstChild, {bottom: oldInnerBottom}); }}
    }, arguments[1] || {})
  );
}
  
Effect.QuickSlideUp = function(element) {
  element = $(element);
  Element.cleanWhitespace(element);
  var oldInnerBottom = Element.getStyle(element.firstChild, 'bottom');
  return new Effect.Scale(element, 0, 
   Object.extend({ scaleContent: false, 
	duration: .2,
    scaleX: false, 
    scaleMode: 'box',
    scaleFrom: 100,
    restoreAfterFinish: true,
    beforeStartInternal: function(effect) { with(Element) {
      makePositioned(effect.element);
      makePositioned(effect.element.firstChild);
      if(window.opera) setStyle(effect.element, {top: ''});
      makeClipping(effect.element);
      show(element); }},  
    afterUpdateInternal: function(effect) { with(Element) {
      setStyle(effect.element.firstChild, {bottom:
        (effect.dims[0] - effect.element.clientHeight) + 'px' }); }},
    afterFinishInternal: function(effect) { with(Element) {
        [hide, undoClipping].call(effect.element); 
        undoPositioned(effect.element.firstChild);
        undoPositioned(effect.element);
        setStyle(effect.element.firstChild, {bottom: oldInnerBottom}); }}
   }, arguments[1] || {})
  );
}