function trim(str) {
  	return str.replace(/^\s+|\s+$/g, '');
}

function landing_submit() {
	var valid = true;

	if(trim(document.thisform.first_name.value) == "") {
		alert("First Name can not be blank.");
		valid = false;
	}
	
	else if(trim(document.thisform.last_name.value) == "") {
		alert("Last Name can not be blank.");
		valid = false;
	}
	
	
	
	else if(trim(document.thisform.company.value) == "") {
		alert("Company can not be blank.");
		valid = false;
	}
	
	else if(trim(document.thisform.email.value) == "") {
		alert("Email can not be blank.");
		valid = false;
	} 

	else if(!isEmail(document.thisform.email.value)) {
		alert("Please enter a valid email.");
		valid = false;
	}
	
	else if(trim(document.thisform.phone.value) == "") {
		alert("Phone can not be blank.");
		valid = false;
	}
	
	
		
	if(valid) {
		document.thisform.submit();
	}
}