function checkPEM(){
			if (isEmail(document.getElementById('pem').value) == false){
				alert('You must provided a valid email address before trying to retreave a password.');
				return false;
			}
		}
		
		function checkLOG(){
			if (document.getElementById('u').value == ''){
				alert('You must provided a username');
				return false;
			}else if (document.getElementById('p').value == ''){
				alert('You must provided a password');
				return false;
			}
		}
		
		function isEmail(str) {
			var supported = 0;
			if (window.RegExp) {
				var tempStr = "a";
				var tempReg = new RegExp(tempStr);
				if (tempReg.test(tempStr)) supported = 1;
				}
			if (!supported)
				return (str.indexOf(".") > 2) && (str.indexOf("@") > 0);
				var r1 = new RegExp("(@.*@)|(\\.\\.)|(@\\.)|(^\\.)");
				var r2 = new RegExp("^.+\\@(\\[?)[a-zA-Z0-9\\-\\.]+\\.([a-zA-Z]{2,3}|[0-9]{1,3})(\\]?)$");
			return (!r1.test(str) && r2.test(str));
		}