/*	-----------------------------------
	function to add events
	-----------------------------------*/
function addEvent(obj, evType, fn)
{ 
	if (obj.addEventListener)
	{ 
		obj.addEventListener(evType, fn, false); 
		return true; 
	}
	else if (obj.attachEvent)
	{ 
		var r = obj.attachEvent("on"+evType, fn); 
		return r; 
	}
}

// Overlaying Form Labels on Input Fields
function initOverLabels() {
	if (!document.getElementById) return;
	
	var labels, id, field;
	
	// Set focus and blur handlers to hide and show 
	// labels with 'overlabel' class names.
	labels = document.getElementsByTagName('label');
	for (var i = 0; i < labels.length; i++) {
		
		if (labels[i].className == 'overlabel') {
			
			// Skip labels that do not have a named association
			// with another field.
			id = labels[i].htmlFor || labels[i].getAttribute('for');
			
			if (!id || !(field = document.getElementById(id))) {
				continue;
			}
			
			// Change the applied class to hover the label 
			// over the form field.
			labels[i].className = 'overlabel-apply';
			
			// Hide any fields having an initial value.
			if (field.value !== '') {
				hideLabel(field.getAttribute('id'), true);
			}
			
			// Set handlers to show and hide labels.
			field.onfocus = function () {
				hideLabel(this.getAttribute('id'), true);
			};
			
			field.onblur = function () {
				if (this.value === '') {
					hideLabel(this.getAttribute('id'), false);
				}
			};
			
			// Handle clicks to label elements (for Safari).
			labels[i].onclick = function () {
				var id, field;
				id = this.getAttribute('for');
				if (id && (field = document.getElementById(id))) {
					field.focus();
				}
			};
		}
	}
};

function hideLabel (field_id, hide) {
	var field_for;
	var labels = document.getElementsByTagName('label');
	for (var i = 0; i < labels.length; i++) {
		field_for = labels[i].htmlFor || labels[i].getAttribute('for');
		if (field_for == field_id) {
			labels[i].style.textIndent = (hide) ? '-1000px' : '0px';
			return true;
		}
	}
}

function loadLabelInit() {
	setTimeout(initOverLabels, 50);
};


addEvent(window, 'load', loadLabelInit);

/*	-----------------------------------
	link functions
	-----------------------------------*/
function initLinkFunctions()
{
	if (document.getElementById && document.getElementsByTagName)
	{
		var links = document.getElementsByTagName('a');
		
		for (var a = 0; a < links.length; a++)
		{
			// open external links in new window
			if (links[a].className == 'external')
			{
				links[a].onclick = function()
				{
					window.open(this.href);
					return false;
				}
			}
		}
	}
}
addEvent(window, 'load', initLinkFunctions);