function isBlank(s)
{
	for (var i =0; i< s.length; i++)
	{
		var c=s.charAt(i);
		if ((c !=' ') && (c !='\n') && (c != '\t')) return false;
	}
	return true;
}


function checkFields(form) {
	
	var contactName;
	var contactPhone;
	var contactEmail;
	var businessName;
	var businessPhone;
	var businessAddress;
	var businessCity;
	var businessState;
	var businessZip;
	var salesTaxPermit;

	
	contactName=form.contactName.value;
	contactPhone=form.contactPhone.value;
	contactEmail=form.contactEmail.value;
	businessName=form.businessName.value;
	businessPhone=form.businessPhone.value;
	businessAddress=form.businessAddress.value;
	businessCity=form.businessCity.value;
	businessState=form.businessState.value;
	businessZip=form.businessZip.value;
	salesTaxPermit=form.salesTaxPermit.value;

	
	if (isBlank(contactName))
	{
		alert('Please enter your name.');
		return false;
	}
	
	if (isBlank(contactPhone))
	{
		alert('Please enter a phone number.');
		return false;
	}
	
	if (isBlank(contactEmail)) 
	{
		alert('Please enter your email address.');
		return false;
	}
	
	if (isBlank(businessName)) 
	{
		alert('Please enter the business name.');
		return false;
	}

	if (isBlank(businessPhone)) 
	{
		alert('Please enter the business phone.');
		return false;
	}
	
	if (isBlank(businessAddress)) 
	{
		alert('Please enter the business address.');
		return false;
	}
	
	if (isBlank(businessCity)) 
	{
		alert('Please enter the business city.');
		return false;
	}
	
	if (isBlank(businessZip)) 
	{
		alert('Please enter the business zip code.');
		return false;
	}		
	
	if (isBlank(salesTaxPermit)) 
	{
		alert('Please the business sales tax permit.');
		return false;
	}		

	
	
	else return true;
}