function getStyleObject(objectId) {
	if(document.getElementById && document.getElementById(objectId)) {
		return document.getElementById(objectId).style;
	}
	else if (document.all && document.all(objectId)) {  
		return document.all(objectId).style;
	} 
	else if (document.layers && document.layers[objectId]) { 
		return document.layers[objectId];
	} else {
		return false;
	}
}

function changeObjectVisibility(objectId, newVisibility) {
    var styleObject = getStyleObject(objectId);
    if(styleObject) {
		styleObject.visibility = newVisibility;
		return true;
    } else {
		return false;
    }
}


function hideAll() {
	changeObjectVisibility('after',"hidden");
	changeObjectVisibility('before',"hidden");
	changeObjectVisibility('process',"hidden");
}

function switchDiv(div_id) {
	var style_sheet = getStyleObject(div_id);
	if (style_sheet) {
		hideAll();
	  	changeObjectVisibility(div_id,"visible");
	} else {
	  	alert("Please try again with a current browser.");
	}
}

function toggle(div_id) {
	document.getElementById('btn_before').src = '/img/btn_before.png';
	document.getElementById('btn_after').src = '/img/btn_after.png';
	document.getElementById('btn_process').src = '/img/btn_process.png';
	var x = "btn_" + div_id;
	document.getElementById(x).src = '/img/btn_' + div_id + '_on.png';
	switchDiv(div_id);
}

function toggleProcess(dirname, movie, width, height, margin) {
	var flashCode = '<object classid="clsid:d27cdb6e-ae6d-11cf-96b8-444553540000" codebase="http://fpdownload.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=8,0,0,0" width="' + width + '" height="' + height + '" id="home_photo" align="middle" style="margin-top:12px;"><param name="allowScriptAccess" value="sameDomain" /><param name="movie" value="/' + dirname + '/' + movie + '.swf" /><param name="quality" value="high" /><param name="bgcolor" value="#003b45" /><embed src="/' + dirname + '/' + movie + '.swf" quality="high" bgcolor="#003b45" width="' + width + '" height="' + height +'" name="home_photo" align="middle" allowScriptAccess="sameDomain" type="application/x-shockwave-flash" pluginspage="http://www.macromedia.com/go/getflashplayer" style="margin-top:' + margin + 'px;" /></object>';
	document.getElementById('btn_before').src = '/img/btn_before.png';
	document.getElementById('btn_after').src = '/img/btn_after.png';
	document.getElementById('btn_process').src = '/img/btn_process_on.png';
	document.getElementById('process').innerHTML = flashCode;
	switchDiv('process');
}

function hideDiv(div_id) {
	changeObjectVisibility(div_id,"hidden");
}

function clearAll() {
	document.getElementById('nav_ghir').src = '/img/portnav_ghir.png';
	document.getElementById('nav_bowler').src = '/img/portnav_bowler.png';
	document.getElementById('nav_amanda').src = '/img/portnav_amanda.png';
	document.getElementById('nav_lulu').src = '/img/portnav_lulu.png';
	document.getElementById('nav_sapporo').src = '/img/portnav_sapporo.png';
	document.getElementById('nav_librarian').src = '/img/portnav_librarian.png';
	document.getElementById('nav_slingbox').src = '/img/portnav_slingbox.png';
	document.getElementById('nav_wynn').src = '/img/portnav_wynn.png';
	document.getElementById('nav_wynnroom').src = '/img/portnav_wynnroom.png';
	document.getElementById('nav_parcelman').src = '/img/portnav_parcelman.png';
}

function choose(id) {
	clearAll();
	var x = 'nav_' + id;
	document.getElementById(x).src = '/img/portnav_' + id + '_on.png';
	document.getElementById('viewport').src = '/' + id + '/index.html';
}

function init() {
	nav_about = new Image(); 
	nav_about.src = "/img/nav_about.png";
	nav_clients = new Image(); 
	nav_clients.src = "/img/nav_clients.png";
	nav_contact = new Image(); 
	nav_contact.src = "/img/nav_contact.png";
	nav_login = new Image(); 
	nav_login.src = "/img/nav_ftp.png";
	btn_before = new Image(); 
	btn_before.src = "/img/btn_before.png";
	btn_after = new Image(); 
	btn_after.src = "/img/btn_after.png";
	btn_process = new Image(); 
	btn_process.src = "/img/btn_process.png";

	clearAll();
	document.getElementById('nav_lulu').src = '/img/portnav_lulu_on.png';
}