function unSubscribe() {	

	var obj = document.getElementById('sresult');
	obj.innerHTML = "Processing...";

	var semail = document.getElementById('semail').value;

	if (!checkemail(semail)) {
     obj.innerHTML = "Recipents E-mail Address is invalid.";
     return false;
    }	

	start = new Date(); 
	start = start.getTime();

	var exec = function(str) {

		if(str != "") {
			obj.innerHTML = str;
		} else {
			obj.innerHTML = ""; 
		}
		document.getElementById('semail').value = "";
	}	

	var ajax = new doAjax();	 
	ajax.doGet('ajax.unSubscribe.php?semail='+semail+'&start='+start, exec);
	
}


function checkemail(email) {

var emails = email.split(' ');

var emailreg = '^[\\w-_\.+]*[\\w-_\.]\@([\\w-_]+\\.)+[\\w]+[\\w]$';

var regex = new RegExp(emailreg );

var rval = false;

var index = 0;
 
while(emails[index]) {

  if (!(rval = regex.test(emails[index]))) break;

  index++;

}

return rval;

}

function trim(str)
	{
	   return str.replace(/^\s*|\s*$/g,"");
	}