function roll_over(img_name, img_src) {
   document[img_name].src = img_src;
}

function generate_email( username, domain ) {
	var atsign = "@";
	var addr = username + atsign + domain;
	document.write( "<" + "a" + " " + "href=" + "mail" + "to:" + addr + ">" + addr +"<\/a>");
}

function checkFields() {
	missinginfo = "";

	if (document.db.submitted_by.value == "") { missinginfo += "\n    - Name";}
	if (document.db.location.value == "") { missinginfo += "\n    - Location";}
	if (document.db.photo.value == "") { missinginfo += "\n    - Photo";}
	
	if (missinginfo != "") { 
		missinginfo ="There has been an error submiting your information.\n" + "\nPlease complete the following fields:" + missinginfo; alert(missinginfo); return false;
	} else {
		return true;
	}
}