function checkpass2()
{
	var pass1= document.getElementById('password');
	var pass2= document.getElementById('password2');
	var err= document.getElementById('err');

	if (pass1.value!=pass2.value&&pass2.value!='')
		{

			if (err) {
			  err.innerHTML ='Passwords must match.';
			}
		}
		else
		{
			        if (err) {
          err.innerHTML ='';
		}

		}
}
function checkemail()
{
	var pass1= document.getElementById('email');
	var err2= document.getElementById('emailerr');
	
	var re='/^.+?@.+?\..+$/';
   var error= 'Invalid  email address. It should be of the form someone@example.com.';
	
//is it valid email?
if (!pass1.value.match("^.+?@.+?\..+$"))
{
			  err2.innerHTML =error;
		}
		else
		{
						  err2.innerHTML ='';

		}
}
function checkpass()
{
	var pass1= document.getElementById('password');
	var err2= document.getElementById('err2');

	if (pass1.value.length<5)
		{

			if (err2) {
			  err2.innerHTML ='Password must be at least five letters.';
			}
		}
		else
		{
			        if (err2) {
          err2.innerHTML ='';
		}

		}
}