function validateForm() {


    var exprOne = /^[A-Za-z]+[ ]*[A-Za-z]+$/;
	var expTwo = /^[0-9]+$/;
    var expThree = /^[ ]+/;
    var exprFour = /^[A-Za-z]+$/;
	var filter=/^[a-zA-Z][\w\_\.-]*[a-zA-Z0-9]@[a-zA-Z0-9][\w\.-]*[a-zA-Z0-9]\.[a-zA-Z][a-zA-Z\.]*[a-zA-Z]$/;

    var name,email,phone;

   name=document.getElementById("Name");
   phone=document.getElementById("phone");
   email=document.getElementById("Email");
  
      
   if(name.value == "") {
		alert("Please Enter Your Name!");
		name.focus();
		return(false); 
	}
	
	
	if(expThree.test(name.value)){
   
      alert("Please Enter a Valid Name!");	  
	  name.focus();
	  name.select();
	  return(false);
    
    }
	
	if(phone.value == "") {
		alert("Please Enter Your Phone Number !");
		phone.focus();
		return(false); 
	}
	
	if(expThree.test(phone.value)){
   
      alert("Please Enter a Valid Phone Number!");	  
	  phone.focus();
	  phone.select();
	  return(false);
    }
	
	 
	 
   if(email.value == "" || email.value == null ) {
		alert("Please Enter E_mail Address!");
		email.focus();
		return(false);
	}
	
	if(!(filter.test(email.value)))
	{
	alert("Please enter a valid Email Id!");
	email.focus();
	email.select();
	return(false);
	}
	
	
	var email = document.getElementById("Email").value;
 
    var apos=email.indexOf("@");
    var dotpos=email.lastIndexOf(".");
  
	if (apos<1||dotpos-apos<2){ 
		
    alert("Please enter a valid E_mail!");
	document.getElementById("Email").focus();
	document.getElementById("Email").select();
	return false;
	}
	
	  
}