function CMScheckFormFields(formfields) {
		var result = true;
		var fields = formfields.split(',');
    for (var i=0; i<fields.length; i++) {
				field = fields[i];
				var elm = document.getElementById(field);
				if (elm.value=='') {
						result = false;
						elm.className = 'input_error';
				} else {
						elm.className = 'input';
				}		
		}
		
		// Error display
		if (result==false) {
    		var divCollection = document.getElementsByTagName("div");
		    for (var i=0; i<divCollection.length; i++) {
						if (divCollection[i].getAttribute("id")=='error_message') {
								divCollection[i].style.display = 'block';
						}
				}				
		}
		
		// Result
		return result;
}