function echeck(str) {

	var at="@"
	var dot="."
	var lat=str.indexOf(at)
	var lstr=str.length
	var ldot=str.indexOf(dot)
	if (str.indexOf(at)==-1){
	   alert("Invalid E-mail ID")
	   return false
	}

	if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
	   alert("Invalid E-mail ID")
	   return false
	}

	if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){
		alert("Invalid E-mail ID")
		return false
	}

	 if (str.indexOf(at,(lat+1))!=-1){
		alert("Invalid E-mail ID")
		return false
	 }

	 if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
		alert("Invalid E-mail ID")
		return false
	 }

	 if (str.indexOf(dot,(lat+2))==-1){
		alert("Invalid E-mail ID")
		return false
	 }
	
	 if (str.indexOf(" ")!=-1){
		alert("Invalid E-mail ID")
		return false
	 }

	 return true					
}

function ValidateForm(){
	
	var txtFirstName = document.frmRequest.r_First_Name;
	var txtLastName = document.frmRequest.r_Last_Name;
	var txtEmail = document.frmRequest.re_Email;
	var txtPhone = document.frmRequest.r_Business_Phone;
	var txtSpamCheck = document.frmRequest.spamCheck;
	
	if( txtFirstName.value == "" ){
		alert("Enter in your first name.");
		txtFirstName.focus();
		return false;
	}
	
	if( txtLastName.value == "" ){
		alert("Enter in your last name.");
		txtLastName.focus();
		return false;
	}
	
	if( !echeck( txtEmail.value ) ){
		txtEmail.focus();
		return false;
	}
	
	if( txtPhone.value == "" ){
		alert("Enter in your phone number.");
		txtPhone.focus();
		return false;
	}
	
	return true
}