//// Slideshow section...

// Variables from setup.js: seconds, timerID, exp, pauseIconUrl, playIconUrl

// START/STOP Slideshow
function toggleSlideShow(exp) 
{
	var on = getCookie('slideShowOn');
	if( on!=null )
			dontSlides(exp);

	else
			doSlides(exp);
		
	
	// For JS keyboard support
	takenAction = false;
}

function setSlideShowStatus(status) 
{
	var url = status ? pauseIconUrl : playIconUrl;

	
	if (document.getElementById)	// IE5+ & Gecko
	{
		if( document.getElementById("slide_show1")!=null )
			document.getElementById("slide_show1").src=url;
		

		if( document.getElementById("slide_show2")!=null )
			document.getElementById("slide_show2").src=url;
			

	}
	else if (document.all)	// IE4
	{
		if( document.all["slide_show1"]!=null )
			document.all["slide_show1"].src=url;

		if( document.all["slide_show2"]!=null )
			document.all["slide_show2"].src=url;
			
	}
	
	else // Netscape 4
	{
		if( document.images["slide_show1"]!=null )
			document.images["slide_show1"].src=url;

		if( document.images["slide_show2"]!=null )
			document.images["slide_show2"].src=url;			

	}
	//RAC!! toggle the remarks icon as needed
	if (status)
		disable_remarks_icon();
	else
		enable_remarks_icon();	
}

//start slideshow
function doSlides(exp) 
{
	setCookie("slideShowOn", "on", exp);
	setSlideShowStatus(true);
	timerID = setTimeout('nextPage()', seconds * 1000);
}

//stop slideshow
function dontSlides(exp) 
{
	deleteCookie("slideShowOn");
	setSlideShowStatus(false);
	clearTimeout(timerID);
}

function getCookieVal(offset) 
{
	var endstr = document.cookie.indexOf (";", offset);
	if (endstr == -1)
		endstr = document.cookie.length;
	return unescape(document.cookie.substring(offset, endstr));
}

function getCookie(name) 
{
	var arg = name + "=";
	var alen = arg.length;
	var clen = document.cookie.length;
	var i = 0;

	while (i < clen) 
	{
		var j = i + alen;
		
		if (document.cookie.substring(i, j) == arg) 
			return getCookieVal (j);
		i = document.cookie.indexOf(" ", i) + 1;
		if (i == 0) 
			break;
	}
	return null;
}

function setCookie(name, value) 
{
	var argv = setCookie.arguments;
	var argc = setCookie.arguments.length;
	var expires = (argc > 2) ? argv[2] : null;
	var path = (argc > 3) ? argv[3] : null;
	var domain = (argc > 4) ? argv[4] : null;
	var secure = (argc > 5) ? argv[5] : false;

	document.cookie = name + "=" + escape (value) +
		((expires == null) ? "" : ("; expires=" + expires.toGMTString())) +
		((path == null) ? "" : ("; path=" + path)) +
		((domain == null) ? "" : ("; domain=" + domain)) +
		((secure == true) ? "; secure" : "");
}

function deleteCookie(name) 
{
	var exp = new Date();
	exp.setTime(exp.getTime() - 1);
	var cval = getCookie(name);
	document.cookie = name + "=" + cval + "; expires=" + exp.toGMTString();
	cval = getCookie(name);
}

// RAC!! toggle Remarks icon so that remarks window isn't opened while the slide show is running

function disable_remarks_icon()
{
	if (remarks_enabled)
		setRemarksStatus(false) ;
}

function enable_remarks_icon()
{
	if (remarks_enabled)
		setRemarksStatus(true) ;
}

function setRemarksStatus(status) 
{
	var url = status ? enableRemarksUrl : disableRemarksUrl;
	var clik = status ? "toggleRemarks" : "doNothing";
	
	if (document.getElementById)	// IE5+ & Gecko
	{
		if( document.getElementById("remarks1")!=null )
		{
			document.getElementById("remarks1").src=url;
			document.getElementById("remarks1").onclick=eval(clik);
		}
		
		if( document.getElementById("remarks2")!=null )
		{
			document.getElementById("remarks2").src=url;
			document.getElementById("remarks2").onclick=eval(clik);
		}	

	}
	else if (document.all)	// IE4
	{
		if( document.all["remarks1"]!=null )
		{
			document.all["remarks1"].src=url;
			document.all["remarks1"].onclick=eval(clik);
		}
		
		if( document.all["remarks2"]!=null )
		{
			document.all["remarks2"].src=url;
			document.all["remarks2"].onclick=eval(clik);
		}
			
	}
	
	else // Netscape 4
	{
		if( document.images["remarks1"]!=null )
			document.images["remarks1"].src=url;

		if( document.images["remarks2"]!=null )
			document.images["remarks2"].src=url;			

	}
		
}


/*display the # of remarks on top of the remarks icon*/
function display_count(count)
{
	document.getElementById("remcnt").innerHTML=count;
	/*center the count over the icon*/
	left="-22px"; margin="-15px";
	if (count>9) {left="-26px"; margin="-22px";}
	if (count>99) {left="-30px"; margin="-29px";}
	document.getElementById("remcnt").style.left=left;
	document.getElementById("remcnt").style.marginRight=margin;
}

function doNothing()
/*this is here to provide an empty function if the remarks icon is clicked while the slideshow is open*/
{
}