function submitLogin()
{
      if( checkLoginRequired() == true)
	  {
	       document.getElementById("action").value = "login_seller";
	       document.log_in_frm.submit();
	  }
}


 function checkLoginRequired()
	 {
		 	if(document.getElementById("product_auto_gen_id").value == "")
			 {
			   document.getElementById("product_auto_gen_id").focus();		
			   alert("Required field property id ");	 
			   return false;
			 }
			 
			 
		    if(document.getElementById("user_email").value!="")
			  {
				 var email = document.getElementById("user_email");
				
				  if(isEMailAddr(email) ==false)
					{
					   email.focus();
					   return false;
					}
				}
			if(document.getElementById("password").value == "")
			 {
			   document.getElementById("password").focus();		
			   alert("Required field password ");	 
			   return false;
			 }	
				
	        
			 
		    return true;
	 }

function isEMailAddr(elem)
 {
    var str = elem.value;
    var re = /^[\w-]+(\.[\w-]+)*@([\w-]+\.)+[a-zA-Z]{2,7}$/;
    if (!str.match(re)) 
	{
        alert("Verify the e-mail address format.");
        
        return false;
    } 
	else 
	{
        return true;
    }
}