// popup window ids
var ir_popup_id = '';

// calculate lower right corner of the screen
if (typeof document.compatMode!='undefined' && document.compatMode!='BackCompat')
{
	ir_css_extra="_top:expression(document.documentElement.scrollTop+document.documentElement.clientHeight-this.clientHeight);";
	ir_css_extra=ir_css_extra + "_left:expression(document.documentElement.scrollLeft + document.documentElement.clientWidth - offsetWidth);}";
} else {
	ir_css_extra="_top:expression(document.body.scrollTop+document.body.clientHeight-this.clientHeight);";
	ir_css_extra=ir_css_extra + "_left:expression(document.body.scrollLeft + document.body.clientWidth - offsetWidth);}";
}

// define CSS for overlay
var ir_css='* html { background:url(http://www.illusionradio.com/images/ir-corner-red.png) fixed; background-repeat: repeat; background-position: right bottom; }';
var ir_css=ir_css + '#ir_overlay { position:fixed; _position:absolute; bottom:0px; right:0px; ';
var ir_css=ir_css + ir_css_extra;

var ir_popup_css='#ir_popup { background-color: transparent; position:fixed; _position:absolute; height:300px; width: 175px; ';
var ir_popup_css=ir_popup_css + 'right: 140px; bottom: 25px; overflow: hidden; visibility: hidden; z-index: 100;';
var ir_popup_css=ir_popup_css + ir_css_extra;

// add a stylesheet
document.write('<style type="text/css">' + ir_css + ir_popup_css + '</style>');

// popup show/hide function
function ir_popup_toggle()
{
	if (ir_popup_id == "")
	{
		var NNtype='show';
		var IEtype='visible';
		var WC3type='visible';
		ir_popup_id = "1";
	} else {
		var NNtype='hidden';
		var IEtype='hidden';
		var WC3type='hidden';
		ir_popup_id = "";
	}
	if (document.getElementById)
	{
		eval("document.getElementById('ir_popup').style.visibility=\""+WC3type+"\"");
	} else {
		if (document.layers)
		{
			document.layers['ir_popup'].visibility=NNtype;
		} else {
			if (document.all)
			{
				eval("document.all.ir_popup.style.visibility=\""+IEtype+"\"");
			}
		}
	}
}

// define the init function
function ir_overlay()
{
	document.write('<div id="ir_popup">');
	document.write('<iframe id="ir_popup_frame" name="ir_popup_frame" src="http://www.illusionradio.com/ext/popup?red" width="175" height="300" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" allowtransparency="true"></iframe>');
	document.write('</div>');

	document.write('<div id="ir_overlay">');
	document.write('<img src="http://www.illusionradio.com/images/ir-corner-red.png" alt="Illusion Radio" onClick="ir_popup_toggle(); return false;" />');
	document.write('</div>');
}