function checkSubmit() {
	var myForm = document.form_search;
	if (myForm.sender_name.value.length < 1) {
		alert ("Please provide your name.");
		myForm.sender_name.focus();
		return false;
	}
	if (myForm.sender_email.value.length < 1) {
		alert ("Please provide your e-mail address.");
		myForm.sender_email.focus();
		return false;
	}
	if (myForm.sender_tel.value.length < 1) {
		alert ("Please provide your telephone.");
		myForm.sender_tel.focus();
		return false;
	}
	if (myForm.sender_description.value.length < 1) {
		alert ("Please describe the image that you are looking for.");
		myForm.sender_description.focus();
		return false;
	}
	if (myForm.security_code.value.length < 1) {
		alert ("Please fill in the security code.");
		myForm.security_code.focus();
		return false;
	}
	else {
		if (confirm("Are you sure you want to submit?")) {
			return true;
		}
		else {
			return false;
		}
	}
} // End function checkSubmit()