// JavaScript Rollovers

function WM_preloadImages() {

/*
WM_preloadImages()
Loads images into the browser's cache for later use.

Source: Webmonkey Code Library
(http://www.hotwired.com/webmonkey/javascript/code_library/)

Author: Nadav Savio
Author Email: nadav@wired.com

Usage: WM_preloadImages('image 1 URL', 'image 2 URL', 'image 3 URL', ...);
*/

  // Don't bother if there's no document.images
  if (document.images) {
    if (typeof(document.WM) == 'undefined'){
      document.WM = new Object();
    }
    document.WM.loadedImages = new Array();
    // Loop through all the arguments.
    var argLength = WM_preloadImages.arguments.length;
    for(arg=0;arg<argLength;arg++) {
      // For each arg, create a new image.
      document.WM.loadedImages[arg] = new Image();
      // Then set the source of that image to the current argument.
      document.WM.loadedImages[arg].src = WM_preloadImages.arguments[arg];
    }
  }
}


function WM_imageSwap(daImage, daSrc){
var objStr,obj;
/*
    WM_imageSwap()
    Changes the source of an image.

    Source: Webmonkey Code Library
    (http://www.hotwired.com/webmonkey/javascript/code_library/)

    Author: Shvatz
    Author Email: shvatz@wired.com

    Usage: WM_imageSwap(originalImage, 'newSourceUrl');

    Requires: WM_preloadImages() (optional, but recommended)
    Thanks to Ken Sundermeyer (ksundermeyer@macromedia.com) for his help
    with variables in ie3 for the mac.
*/

  // Check to make sure that images are supported in the DOM.
  if(document.images){
    // Check to see whether you are using a name, number, or object
    if (typeof(daImage) == 'string') {
      // This whole objStr nonesense is here solely to gain compatability
      // with ie3 for the mac.
      objStr = 'document.' + daImage;
      obj = eval(objStr);
      obj.src = daSrc;
    } else if ((typeof(daImage) == 'object') && daImage && daImage.src) {
      daImage.src = daSrc;
    }
  }
}

function loadNav() {
	WM_preloadImages('images/home-over.gif', 'images/agenda-over.gif', 'images/speakers-over.gif', 'images/sponsor-over.gif', 'images/portal-over.gif', 'images/register-over.gif', 'images/venue-over.gif', 'images/value-over.gif', 'images/who-over.gif');
}

function pop_box(title, text, allow_contact, client_id) {
	document.getElementById('standard_title').innerHTML = title;
	var textbox = document.getElementById('standard_text');
	textbox.innerHTML = text;
	textbox.scrollTop = 0;

	var box = document.getElementById('standard_box');
	box.style.display = 'block';
	box.style.top = (200 + (window.pageYOffset||document.body.scrollTop)) + 'px';
	
	var msg = document.getElementById('message_link');
	
	if(msg != null){
		if(allow_contact > 0){
			msg.style.display = 'block';
		}else{
			msg.style.display = 'none';
		}
	}

	var link = 'send_message.php?client_id=';
	link += client_id
	
	if($('href_message_link') != null){
		$('href_message_link').href = link;
	}
}

function pop_box_pic(title, text, pic_URL, allow_contact, client_id) {	

	document.getElementById('standard_title_pic').innerHTML = title;
	var textbox = document.getElementById('standard_text_pic');	
	textbox.innerHTML = text;	
		
	document.getElementById('bio_picture').src = pic_URL;
	textbox.scrollTop = 0;

	var box = document.getElementById('standard_box_pic');
	box.style.display = 'block';
	box.style.top = (200 + (window.pageYOffset||document.body.scrollTop)) + 'px';
	
	
	var msg = document.getElementById('message_link_pic');
	
	if(allow_contact > 0){		
			msg.style.display = 'block';
	}
	else{
		msg.style.display = 'none';
	}
	
	var link = 'send_message.php?client_id=';
	link += client_id
	
	
	$('href_message_link_pic').href = link;
	
	
	
}

function pop_bio_box(name, title, bio, allow_contact, client_id) {
	document.getElementById('bio_title').innerHTML = title;
	pop_box(name, bio, allow_contact, client_id);
}

function pop_bio_pic_box(name, title, bio, pic_url, allow_contact, client_id) {
	document.getElementById('bio_title_pic').innerHTML = title;
	pop_box_pic(name, bio, pic_url, allow_contact, client_id);
}

function close_box(){
	document.getElementById('standard_box').style.display = 'none';
}

function close_bio_box(){
	document.getElementById('box_no_pic').style.display = 'none';
}

function close_bio_pic_box(){
	document.getElementById('standard_box_pic').style.display = 'none';
}


function expand_session(id){
	document.getElementById('collapse_'+id).style.display = 'block';
	document.getElementById('collapse_link_'+id).style.display = 'none';
}

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