function sugval()
{
	var status = true;
    var emailExp = /^[\w\-\.\+]+\@[a-zA-Z0-9\.\-]+\.[a-zA-z0-9]{2,4}$/;
    var nameText = document.getElementById("txt_name").value;
	var emailText = document.getElementById("txt_email").value;
	var phText = document.getElementById("txt_ph").value;
	
	var msgText = document.getElementById("txt_msg").value;
	 if(nameText == "")
    {
        status = false;
        alert("please enter your name");
    }
	else if(emailText == "")
    {
        status = false;
        alert("please enter your emailid");
    }
	else if(phText == "")
    {
        status = false;
        alert("please enter your phone number");
    }
	else if(msgText == "")
    {
        status = false;
        alert("please enter message ");
    }
	 else if(emailText !="")
    {
        if(emailText.match(emailExp))
        {
            
        }
        else
        {
             alert("Invalid Email Address");
			 status = false;
        }
    }
	return status;
}