// JScript File
function f_show_rollover(obj) {
    document.getElementById(obj).style.display = 'block';
}

function f_home_hide_all() {
    document.getElementById("Reg").style.display = 'none';
    document.getElementById("Agenda").style.display = 'none';
    document.getElementById("Speakers").style.display = 'none';
    document.getElementById("Venue").style.display = 'none';
    document.getElementById("Community").style.display = 'none';
}

function f_show_bio(who) {
    var bioDiv = document.getElementById('BioPopup');
    var bioImageDiv = document.getElementById('BioImage');
    var wrapperDiv = document.getElementById('PageWrapper');

    document.body.style.overflow = 'hidden';

	var offsetLeft = document.documentElement.scrollLeft ? document.documentElement.scrollLeft : document.body.scrollLeft;
    var leftCalculated = window.innerWidth ? window.innerWidth : document.body.clientWidth
    leftCalculated = (leftCalculated / 2) - (offsetLeft / 2) - 273

	var offsetTop = document.documentElement.scrollTop ? document.documentElement.scrollTop : document.body.scrollTop;
	var topCalculated = 0
    if( typeof( window.innerWidth ) == 'number' ) {
        topCalculated = offsetTop + (window.innerHeight/2) - 274;
    } else if( document.documentElement && ( document.documentElement.clientWidth || document.documentElement.clientHeight ) ) {
        topCalculated = offsetTop + (document.documentElement.clientHeight/2) - 274;
    } else if( document.body && ( document.body.clientWidth || document.body.clientHeight ) ) {
        topCalculated = offsetTop + (document.body.clientHeight/2) - 274;
    }
    var topPixels = topCalculated + 'px';
    var leftPixels = leftCalculated + 'px';

    bioDiv.style.top = topPixels;
    bioDiv.style.left = leftPixels;
    
    bioImageDiv.innerHTML = '';
    bioImageDiv.innerHTML = '<img src=\'images/bios/' + who + '_bio.gif\' alt=\'\'/>';

    bioDiv.style.display = 'block';
    wrapperDiv.style.display = 'block';
    bioImageDiv.scrollTop = 0;
}

function f_close_bio() {
    var bioDiv = document.getElementById('BioPopup');
    var wrapperDiv = document.getElementById('PageWrapper');

    bioDiv.style.display = 'none';
    wrapperDiv.style.display = 'none';
    document.body.style.overflow = 'auto';
}