function checkValidForm()
{
var strMail = document.getElementById('ctl00_contentplace1_txt_email').value;
var regMail = /^\w+([-.']\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*$/;
  
 if(document.getElementById('ctl00_contentplace1_txt_email').value == "")
  { 
      document.getElementById('ctl00_contentplace1_txt_email').focus();
      alert("please Enter email id");
      return false;
   }
   else if (regMail.test(strMail)==false)
  {      
      document.getElementById('ctl00_contentplace1_txt_email').focus();
      alert("Invalid email format.\nPlease enter a valid email in the format user@host.domain.");
       return false;
  }     
else
  {
  return true;
  }      
}

//##########################
function checkmail()
{
var strMail = document.getElementById('ctl00_txt_email').value;
var regMail = /^\w+([-.']\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*$/;
  
 if(document.getElementById('ctl00_txt_email').value == "")
  { 
      document.getElementById('ctl00_txt_email').focus();
      alert("please Enter email id");
      return false;
   }
   else if (regMail.test(strMail)==false)
  {      
      document.getElementById('ctl00_txt_email').focus();
      alert("Invalid email format.\nPlease enter a valid email in the format user@host.domain.");
       return false;
  }     
else
  {
  return true;
  }      
}
function checktutorForm()
{
var strMail = document.getElementById('ctl00_contentplace1_txt_email').value;
var regMail = /^\w+([-.']\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*$/;
  
 if(document.getElementById('ctl00_contentplace1_txt_email').value == "")
  { 
      document.getElementById('ctl00_contentplace1_txt_email').focus();
      alert("please Enter email id");
      return false;
   }
   else if (regMail.test(strMail)==false)
  {      
      document.getElementById('ctl00_contentplace1_txt_email').focus();
      alert("Invalid email format.\nPlease enter a valid email in the format user@host.domain.");
       return false;
  } 
  else if(document.getElementById('ctl00_contentplace1_txt_pass').value == "")
  { 
      document.getElementById('ctl00_contentplace1_txt_pass').focus();
      alert("please Enter Password");
      return false;
   }
else
  {
  return true;
  }      
}