function j_chk_empty_array(j_array, j_array_names){
	
	var valid = true;
	var error = 'Follow fields need to be filled:\n';

	for(var keyvalue in j_array){
		if( document.getElementById(j_array[keyvalue]).value.length == 0 ){
			valid = false;
			error += '\t'+j_array_names[keyvalue]+'\n';
		}
	}

	if( valid == false ){		
		alert(error);
		return false;	
	}else{
		return true;
	}
}

function j_chk_email(j_email_id){
	
	var status = false;     
	var emailRegEx = /^[A-Z0-9._%+-]+@[A-Z0-9.-]+\.[A-Z]{2,4}$/i;
	
	if(document.getElementById(j_email_id).value.search(emailRegEx) == -1){
		alert("Please enter a valid email address.");
	}else{
		alert("Woohoo!  The email address is in the correct format and they are the same.");
		status = true;
	}
	return status;
}

function j_showhide(layer_ref) {
if (document.getElementById(layer_ref).style.visibility == 'collapse' ) {
		document.getElementById(layer_ref).style.visibility = 'visible';
	}else{
		document.getElementById(layer_ref).style.visibility = 'collapse';
	}
}

function j_show(layer_ref) {
	document.getElementById(layer_ref).style.visibility = 'visible';
}

function j_hide(layer_ref) {
	document.getElementById(layer_ref).style.visibility = 'collapse';
}