function setCookieValue(key, value){
	var expires = "";
	var days = 1;
	
	if (days) {
        	var date = new Date();
        	date.setTime(date.getTime()+(days*24*60*60*1000));
        	expires = "; expires="+date.toGMTString();
    	}
	var cookieStr = key+"="+value+expires+"; path=/";
	//alert('write cookie: '+cookieStr);
	document.cookie = cookieStr;
}

function getCookieValue(key){
	var nameEQ = key + "=";
	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 '';
}
function showHideSwitch (elmId) {
 var elm = document.getElementById(elmId);
 if (elm.style.display == 'none')
 	elm.style.display = 'block';
 else
 	elm.style.display = 'none';
}