function chk_email()
{
	if(checkBlank(document.getElementById('email').value))
		{
		  alert("Please enter your  email");
				document.getElementById('email').focus();
				return false;
		  }
		  
		  	
 if(!checkBlank(document.getElementById('email').value))
		{
       		if(!checkEmail(document.getElementById('email').value))
			{
				alert("Please enter your valid email");
				document.getElementById('email').focus();
				return false;
			}
		}
 

if(checkBlank(document.getElementById('comment').value))
		{
		       alert("Please enter your  Comment");
				document.getElementById('comment').focus();
				return false;
		  }
return true

}