// JavaScript Document

// small is the starting size
var farphuture="Thu, 01-Jan-2070 00:00:01 GMT";
var s;
//alert(document.cookie);
if (!(getCookie("IntTSize")==null)) 
{ 
	s=getCookie("IntTSize"); 
	if (s>7) {s=7;}  
}
else
{
	s=3;
}; 

var size = new Array;
size[1]="xx-small";
size[2]="x-small";
size[3]="small";
size[4]="medium";
size[5]="large";
size[6]="x-large";
size[7]="xx-large";

function ChangeTextSize(dir)
{
	//alert(s);
	s=parseInt(s);
	if (dir=="+") { s=s+1};
	if (dir=="-") { s=s-1};
	//alert("i "+s);
	if (s<2) { s=2; };
	if (s>7) { s=7; };	
	//alert("A"+s);
	//if (size[s]==undefined) {s=3;};
	//alert(document.cookie);
	document.body.style.fontSize=size[s];	
	setCookie("TextSize",size[s],farphuture,"/");
	setCookie("IntTSize",s,farphuture,"/");	
	//window.status=document.cookie; status=document.cookie; 
	window.status="Text size is " + size[s]; status="Text size is " + size[s];
}
function ChangeLook(el)
{
	el.style.backgroundColor = "#FF66CC";
	el.style.color = "#FFFFFF";
	el.style.cursor="pointer";
}

function ChangeBack(el,backgroundcolor)
{
	//#828A97
	var bgc=backgroundcolor;
	if (bgc==undefined) 
	{ 
		bgc="#CCCCCC";
	}
	else
	{
		bgc="#FF66CC";
	}
	//alert(bgc);
	el.style.backgroundColor = bgc;
	el.style.color = "#000000";
	el.style.cursor="normal";	
}

function EnableScreenReader()
{
	document.getElementById("leftcontainer").style.display="none";  
	document.getElementById("DisableScreenReader").style.display="inline";
	document.getElementById("TextSizeButtons").style.display="inline";	
	var imgs=document.getElementsByTagName("img");
	for (i=0;i<imgs.length;i++)
	{
		document.images[i].style.display="none";
	}
	setCookie("ScreenReader","true",farphuture,"/")

}

function DisableScreenReader()
{
	document.getElementById("leftcontainer").style.display="block";  
	document.getElementById("DisableScreenReader").style.display="none";
	document.getElementById("TextSizeButtons").style.display="none";	
	var imgs=document.getElementsByTagName("img");	
	for (i=0;i<imgs.length;i++)
	{
		document.images[i].style.display="inline";
	}
	setCookie("ScreenReader", "false", farphuture,"/")	//, path, domain, secure)
}



function CheckForScreenReader()
{
	//alert(getCookie("ScreenReader"))
	if (getCookie("ScreenReader")=="true") { EnableScreenReader();};
}



/**
 * Read the JavaScript cookies tutorial at:
 *   http://www.netspade.com/articles/javascript/cookies.xml
 */

/**
 * Sets a Cookie with the given name and value.
 *
 * name       Name of the cookie
 * value      Value of the cookie
 * [expires]  Expiration date of the cookie (default: end of current session)
 * [path]     Path where the cookie is valid (default: path of calling document)
 * [domain]   Domain where the cookie is valid
 *              (default: domain of calling document)
 * [secure]   Boolean value indicating if the cookie transmission requires a
 *              secure transmission
 */
function setCookie(name, value, expires, path, domain, secure)
{
    document.cookie= name + "=" + escape(value) +
        ((expires) ? "; expires=" + farphuture : "") +
        ((path) ? "; path=" + path : "") +
        ((domain) ? "; domain=" + domain : "") +
        ((secure) ? "; secure" : "");
}

/**
 * Gets the value of the specified cookie.
 *
 * name  Name of the desired cookie.
 *
 * Returns a string containing value of specified cookie,
 *   or null if cookie does not exist.
 */
function getCookie(name)
{
    var dc = document.cookie;
    var prefix = name + "=";
    var begin = dc.indexOf("; " + prefix);
    if (begin == -1)
    {
        begin = dc.indexOf(prefix);
        if (begin != 0) return null;
    }
    else
    {
        begin += 2;
    }
    var end = document.cookie.indexOf(";", begin);
    if (end == -1)
    {
        end = dc.length;
    }
    return unescape(dc.substring(begin + prefix.length, end));
}

/**
 * Deletes the specified cookie.
 *
 * name      name of the cookie
 * [path]    path of the cookie (must be same as path used to create cookie)
 * [domain]  domain of the cookie (must be same as domain used to create cookie)
 */
function deleteCookie(name, path, domain)
{
    if (getCookie(name))
    {
        document.cookie = name + "=" + 
            ((path) ? "; path=" + path : "") +
            ((domain) ? "; domain=" + domain : "") +
            "; expires=Thu, 01-Jan-70 00:00:01 GMT";
    }
}