var RedBox = {

  showInline: function(id)
  {
    this.showOverlay();
    new Effect.Appear('RB_window', {duration: 0.4, queue: 'end'});        
    this.cloneWindowContents(id);
  },

  loading: function()
  {
    this.showOverlay();
    Element.show('RB_loading');
    this.setWindowPosition();
  },

  addHiddenContent: function(id)
  {
    this.removeChildrenFromNode($('RB_window'));
    this.moveChildren($(id), $('RB_window'));
    Element.hide('RB_loading');
    new Effect.Appear('RB_window', {duration: 0.4, queue: 'end'});  
    this.setWindowPosition();
  },

  close: function()
  {
    new Effect.Fade('RB_window', {duration: 0.4});
    new Effect.Fade('RB_overlay', {duration: 0.4});
    this.showSelectBoxes();
    this.showRedboxHide();
    this.removeChildrenFromNode($('RB_window'));
  },

  showOverlay: function()
  {
    if ($('RB_redbox'))
    {
      Element.update('RB_redbox', "");
      new Insertion.Top($('RB_redbox'), '<div id="RB_window" style="display: none;"></div><div id="RB_overlay" style="display: none;"></div>');  
    }
    else
    {
      new Insertion.Top(document.body, '<div id="RB_redbox" align="center"><div id="RB_window" style="display: none;"></div><div id="RB_overlay" style="display: none;"></div></div>');      
    }
    new Insertion.Bottom('RB_redbox', '<div id="RB_loading" style="display: none"></div>');  

    this.setOverlaySize();
    this.hideSelectBoxes();
    this.hideRedboxHide();
    new Effect.Appear('RB_overlay', {duration: 0.4, to: 0.8, queue: 'end'});
  },
  
  getYScroll: function(){

      var yScroll;

      if (self.pageYOffset) {
          yScroll = self.pageYOffset;
      } else if (document.documentElement && document.documentElement.scrollTop){     // Explorer 6 Strict
          yScroll = document.documentElement.scrollTop;
      } else if (document.body) {// all other Explorers
          yScroll = document.body.scrollTop;
      }

      return yScroll;
  },

  getPageSize: function(){

      var xScroll, yScroll;

      if (window.innerHeight && window.scrollMaxY) {	
      		xScroll = document.body.scrollWidth;
      		yScroll = window.innerHeight + window.scrollMaxY;
      	} else if (document.body.scrollHeight > document.body.offsetHeight){ // all but Explorer Mac
      		xScroll = document.body.scrollWidth;
      		yScroll = document.body.scrollHeight;
      	} else { // Explorer Mac...would also work in Explorer 6 Strict, Mozilla and Safari
      		xScroll = document.body.offsetWidth;
      		yScroll = document.body.offsetHeight;
      	}

      	var windowWidth, windowHeight;
      	if (self.innerHeight) {	// all except Explorer
      		windowWidth = self.innerWidth;
      		windowHeight = self.innerHeight;
      	} else if (document.documentElement && document.documentElement.clientHeight) { // Explorer 6 Strict Mode
      		windowWidth = document.documentElement.clientWidth;
      		windowHeight = document.documentElement.clientHeight;
      	} else if (document.body) { // other Explorers
      		windowWidth = document.body.clientWidth;
      		windowHeight = document.body.clientHeight;
      	}	

      	// for small pages with total height less then height of the viewport
      	if(yScroll < windowHeight){
      		pageHeight = windowHeight;
      	} else { 
      		pageHeight = yScroll;
      	}

      	// for small pages with total width less then width of the viewport
      	if(xScroll < windowWidth){	
      		pageWidth = windowWidth;
      	} else {
      		pageWidth = xScroll;
      	}

      arrayPageSize = new Array(pageWidth,pageHeight,windowWidth,windowHeight) 
      return arrayPageSize;
  },

  
  setOverlaySize: function()
  {
    var sz = this.getPageSize();
    var pageScroll = this.getYScroll();
    $("RB_overlay").style['height'] = sz[1] +"px";
    $("RB_overlay").style['top'] = pageScroll +"px";
  },
  
  

  setWindowPosition: function()
  {
    var pagesize = this.getPageSize();  
  
    $("RB_window").style['width'] = 'auto';
    $("RB_window").style['height'] = 'auto';

    var dimensions = Element.getDimensions($("RB_window"));
    var width = dimensions.width;
    var height = dimensions.height;        
    
    $("RB_window").style['left'] = ((pagesize[0] - width)/2) + "px";
    $("RB_window").style['top'] = ((pagesize[1] - height)/2) + "px";
    
    var arrayPageSize = this.getPageSize();
    var pageScroll = this.getYScroll();
    $("RB_window").style['top'] = (pageScroll + (pagesize[1] - height)/2) + "px";
    
  },


  getPageSize: function() {
    var de = document.documentElement;
    var w = window.innerWidth || self.innerWidth || (de&&de.clientWidth) || document.body.clientWidth;
    var h = window.innerHeight || self.innerHeight || (de&&de.clientHeight) || document.body.clientHeight;
  
    arrayPageSize = new Array(w,h) 
    return arrayPageSize;
  },

  removeChildrenFromNode: function(node)
  {
    while (node.hasChildNodes())
    {
      node.removeChild(node.firstChild);
    }
  },

  moveChildren: function(source, destination)
  {
    while (source.hasChildNodes())
    {
      destination.appendChild(source.firstChild);
    }
  },

  cloneWindowContents: function(id)
  {
    var content = $(id).cloneNode(true);
    content.style['display'] = 'block';
    $('RB_window').appendChild(content);  

    this.setWindowPosition();
  },
  
  hideSelectBoxes: function()
  {
  	selects = document.getElementsByTagName("select");
  	for (i = 0; i != selects.length; i++) {
  		selects[i].style.visibility = "hidden";
  	}
  },

  showSelectBoxes: function()
  {
  	selects = document.getElementsByTagName("select");
  	for (i = 0; i != selects.length; i++) {
  		selects[i].style.visibility = "visible";
  	}
  },
  
  hideRedboxHide: function()
  {
    var redbox_hides = document.getElementsByClassName('redbox_hide');
    for (i = 0; i != redbox_hides.length; i++) {
  	  redbox_hides[i].style.visibility = "hidden";
  	}
  },
  
  showRedboxHide: function()
  {
    var redbox_hides = document.getElementsByClassName('redbox_hide');
    for (i = 0; i != redbox_hides.length; i++) {
  	  redbox_hides[i].style.visibility = "visible";
  	}
  }
  
}