// JavaScript Document
function initHomeFlash() {
	var ckFlashVal = "flash_num";
	var flNum = 3;
	
	var ckFlashNum = readCookie(ckFlashVal);
	
	if (ckFlashNum) {
		ckFlashNum ++;
		if (ckFlashNum >= flNum)ckFlashNum = 0;
	} else {
		ckFlashNum = Math.floor(Math.random()*flNum);
	}
	obj = getObject("fl"+(ckFlashNum+1)).style.display = "block";
	document.cookie = ckFlashVal + "=" + ckFlashNum;
}

function initFeatureImages() {
	var fid = new Array(4);
	for (var i=0;i<fid.length;i++) {
		fid[i] = "item" + (i+1);
	}
	var fimage = new Array(8);
	for (var i=0;i<fimage.length;i++) {
		fimage[i] = "uploads/images/home/im_tn_home_0"+(i+1)+".jpg";
	}
	
	var rnum_fid = new Array(fid.length);
	var rnum_image = new Array(fimage.length);
	rnum_fid[0] = Math.floor(Math.random()*fid.length);
	rnum_image[0] = Math.floor(Math.random()*fimage.length);
	
	for (i=1;i<fid.length;i++) {
		rnum_fid[i] = rnum_fid[i-1] + 1;
		rnum_image[i] = rnum_image[i-1] + 1;
		if (rnum_fid[i]>=fid.length) rnum_fid[i] = 0;
		if (rnum_image[i]>=fimage.length) rnum_image[i] = 0;
	}	
	for (i=0;i<fid.length;i++) {
		obj = getObject(fid[rnum_fid[i]]).style.backgroundImage = "url('"+ fimage[rnum_image[i]] + "')";
	}
}

function initFactText() {
	
	var maxfacts = getObject("facts").getElementsByTagName("p").length;
	var fnum = Math.floor(Math.random()*maxfacts) + 1;
	var obj = getObject("fact-item"+fnum);
	//var prevobj = getObject("fact-item1");
	//prevobj.style.display = "none";
	obj.style.display = "block";
	//prevobj = obj;
}
function readCookie(val) {
	var ck = val + "=";
	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(ck) == 0) return c.substring(ck.length,c.length);
	}
	return null;
}
function goSignupPage() {
	valEmail = document.frmSignup.email.value;
	if (valEmail == "Signup for newsletter" || valEmail == "") {
		valEmail = "";
	}
	window.location = "index.php?page=sign-up&email="+ valEmail;
}

function getObject(name){
	if (document.getElementById){
	   obj = document.getElementById(name);
	}
	else if (document.all){
	   obj = document.all[name];
	}
	else if (document.layers){
		if (document.layers[name]){
			obj = document.layers[name];
		}
	}
	return obj;
}