//document.write('<link rel="stylesheet" type="text/css" href="global/_css_source/app_nav.css">');

// Random Image *************************************************************

var randomnumber;

function randomHomePic(totalPics){
    randomnumber = randomNum(totalPics);
    if (!readCookie('homepic'))createCookie('homepic',randomnumber,0);  
    while (randomnumber == readCookie('homepic')) {
        randomnumber = randomNum(totalPics);
    }
    if(document.getElementById){
        currentPicClass = "pic" + randomnumber;
        if(document.getElementById('mainContentContainer')){
            document.getElementById('mainContentContainer').className=currentPicClass;
        }
    }
    createCookie('homepic',randomnumber,0);
}

function randomNum(totalNums){return Math.floor(Math.random()*totalNums);}

// Cookie functions *******************************************************

// set days = 0 for expiration on session end

function createCookie(name,value,days)
{
	if (days)
	{
		var date = new Date();
		date.setTime(date.getTime()+(days*24*60*60*1000));
		var expires = "; expires="+date.toGMTString();
	}
	else var expires = "";
	document.cookie = name+"="+value+expires+"; path=/";
}

function readCookie(name)
{
	var nameEQ = name + "=";
	var ca = document.cookie.split(';');
	for(var i=0;i < ca.length;i++)
	{
		var c = ca[i];
		while (c.charAt(0)==' ') c = c.substring(1,c.length);
		if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
	}
	return null;
}

function eraseCookie(name)
{
	createCookie(name,"",-1);
}