function show(element){
		document.getElementById(element).style.visibility = 'visible';
}
	
function hide(element){
		document.getElementById(element).style.visibility = 'hidden';
}
	
function changeClass(element, newClass){
	document.getElementById(element).className= newClass;
}


/****** FORM FUNCTIONS ******/

function errorCheck() {	
	if ((document.emailform.name.value=="")||(document.emailform.name.value==" ")){
		alert("Please fill in the 'Name' field");
		return false;
	}	
	if ((document.emailform.visitormail.value=="")||(document.emailform.visitormail.value==" ")){
		alert("Please fill in the 'Email' field");
		return false;
	}	
	else {				
		document.emailform.submit();		
	}
	
}