function removeSpaces(str) {
 return str.split(' ').join('');
}
function emailValidate(emailId){
var eml=emailId.value;
if ((emailId.value.indexOf('@', 0) ==  -1) || (emailId.value.indexOf('.', 0) == -1 ) || (eml.length < 6 ))
       {
           alert('Please enter a valid Email ID');
          emailId.focus();
          return false;
      }
                  var len = eml.length -1;
       if ((eml.charAt(len) == ".") || (eml.charAt(len) == "@"))
  		{
     alert('Please enter a valid Email ID');
            emailId.focus();
            return false;
  		}
var i=0;
var j=0;
var k=0;
    for (i=0; i<=eml.length ;i++)
       if (eml.charAt(i) == "@")
          if (eml.charAt(i+1) == ".")
              {
            alert('Please enter a valid Email ID');
                 emailId.focus();
                      return false;
            break;
           }
  for (j=eml.length; j>=0 ;j--)
 {
          if (eml.charAt(j) != ".")
         k++;
     else
         break;
 }
                        if ( k < 3)
                          {
                            alert('Please enter a valid Email');
                              emailId.focus();
                           return false;
                          }
 for (j=0; j < eml.length; j++){
      ch= eml.charAt(j);
          if (ch == "'"){
          aleart('Please enter valid Email');
          emailId.focus();
          return false;
          }
		   }
}
function validates()
{
	if(removeSpaces(document.getElementById('author').value)=="")
	{
		alert('Please Enter Name');
		return false;
	}
	if(removeSpaces(document.getElementById('email').value)=="")
	{
	alert('Please Enter email');
	return false;
	}
	var emailId=document.getElementById('email');
	return emailValidate(emailId);
	if(removeSpaces(document.getElementById('comment').value)=="")
	{
	alert('Please Enter comment');
	return false;
	}
	
}