function toggle_visibility(id) {
   var e = document.getElementById(id);
   if(e.style.display == 'inline')
	  e.style.display = 'none';
   else
	  e.style.display = 'inline';
}
function check_form_contact(){
	var check_val='true';
	if (document.form_contact.name.value==""){
		alert('Please enter your name');
		return false;
		check_val='false';
	}
	if (document.form_contact.email.value==""){
		alert('Please enter your email');
		return false;
		check_val='false';
	}
	if (check_val=='false'){
		return false;
	}
	else {
		return true;
	}
}
function check_form_customers(){
	var check_val='true';
	if (document.form_customers.company.value==""){
		alert('Please enter your company name');
		return false;
		check_val='false';
	}
	if (document.form_customers.address1.value==""){
		alert('Please enter your address');
		return false;
		check_val='false';
	}
	if (document.form_customers.city.value==""){
		alert('Please enter your city');
		return false;
		check_val='false';
	}
	if (document.form_customers.state.value==""){
		alert('Please enter your state');
		return false;
		check_val='false';
	}
	if (document.form_customers.zip.value==""){
		alert('Please enter your zip');
		return false;
		check_val='false';
	}
	if (document.form_customers.name.value==""){
		alert('Please enter your name');
		return false;
		check_val='false';
	}
	if (document.form_customers.email.value==""){
		alert('Please enter your email address');
		return false;
		check_val='false';
	}
	if (document.form_customers.phone.value==""){
		alert('Please enter your phone number');
		return false;
		check_val='false';
	}
	if (check_val=='false'){
		return false;
	}
	else {
		return true;
	}
}
function check_form_vendors(){
	var check_val='true';
	if (document.form_vendors.vname.value==""){
		alert('Please enter your name');
		return false;
		check_val='false';
	}
	if (document.form_vendors.phone.value==""){
		alert('Please enter your phone number');
		return false;
		check_val='false';
	}
	if (document.form_vendors.email.value==""){
		alert('Please enter your email');
		return false;
		check_val='false';
	}
	if (check_val=='false'){
		return false;
	}
	else {
		return true;
	}
}