/* ========= */
/* SHOWING /HIDING  IDS */
/* ========= */
var browserType;
var fieldToHide;
var fieldToShow;
if (document.layers) {browserType = "nn4"}
if (document.all) {browserType = "ie"}
if (window.navigator.userAgent.toLowerCase().match("gecko")) {browserType= "gecko"}
/* hide an id */
function hideMe(fieldToHide) {
	if (browserType == "gecko" )
		document.poppedLayer =  eval('document.getElementById(fieldToHide)');
	else if (browserType == "ie")
		document.poppedLayer = eval('document.getElementById(fieldToHide)');
	else 
		document.poppedLayer =  eval('document.layers[fieldToHide]');
		document.poppedLayer.style.display = "none";
}
/* show an id */
function showMe(fieldToShow) {
	if (browserType == "gecko" ) 
		document.poppedLayer = eval('document.getElementById(fieldToShow)');
	else if (browserType == "ie") 
		document.poppedLayer = eval('document.getElementById(fieldToShow)');
	else 
		document.poppedLayer = eval('document.layers[fieldToShow]');
		document.poppedLayer.style.display = "block";
}
/* show and hide an id, with arrow*/
function showHideIds(theId,theImage) {
	if (browserType == "gecko" ) 
		document.poppedLayer = eval('document.getElementById(theId)');
	else if (browserType == "ie") 
		document.poppedLayer = eval('document.getElementById(theId)');
	else 
		document.poppedLayer = eval('document.layers[theId]');
	
	if (document.poppedLayer.style.display == "none" || document.poppedLayer.style.display == ''){
		document.poppedLayer.style.display = "block";
		document.getElementById(theImage).src = "imgs/arrow_down.gif";
	}
	else {
		document.poppedLayer.style.display = "none";
		document.getElementById(theImage).src = "imgs/arrow_up.gif";
	}

}
/* show and hide an id, with arrow*/
function showHideIdsAlt(theId,theImage) {
	if (browserType == "gecko" ) 
		document.poppedLayer = eval('document.getElementById(theId)');
	else if (browserType == "ie") 
		document.poppedLayer = eval('document.getElementById(theId)');
	else 
		document.poppedLayer = eval('document.layers[theId]');
	
	if (document.poppedLayer.style.display == "none" || document.poppedLayer.style.display == ''){
		document.poppedLayer.style.display = "block";
		document.getElementById(theImage).src = "imgs/arrow_bt_down.gif";
	}
	else {
		document.poppedLayer.style.display = "none";
		document.getElementById(theImage).src = "imgs/arrow_bt_up.gif";
	}

}
/* show and hide an id, with arrow*/
function showHideIdsNav(theId,theImage) {
	if (browserType == "gecko" ) 
		document.poppedLayer = eval('document.getElementById(theId)');
	else if (browserType == "ie") 
		document.poppedLayer = eval('document.getElementById(theId)');
	else 
		document.poppedLayer = eval('document.layers[theId]');
	
	if (document.poppedLayer.style.display == "none" || document.poppedLayer.style.display == ''){
		document.poppedLayer.style.display = "block";
		document.getElementById(theImage).src = "imgs/arrow_nav_down.gif";
	}
	else {
		document.poppedLayer.style.display = "none";
		document.getElementById(theImage).src = "imgs/arrow_nav_up.gif";
	}

}

/* show and hide an id, with arrow - inline version*/
function showHideInlineIds(theId,theImage) {
	if (browserType == "gecko" ) 
		document.poppedLayer = eval('document.getElementById(theId)');
	else if (browserType == "ie") 
		document.poppedLayer = eval('document.getElementById(theId)');
	else 
		document.poppedLayer = eval('document.layers[theId]');
	
	if (document.poppedLayer.style.display == "none" || document.poppedLayer.style.display == ''){
		document.poppedLayer.style.display = "inline";
		document.getElementById(theImage).src = "imgs/arrow_close.gif";
	}
	else {
		document.poppedLayer.style.display = "none";
		document.getElementById(theImage).src = "imgs/arrow_open.gif";
	}

}

/* cookies */
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;
}