// Heronswood.com Interface functions

function clearValue(varObj,varValue) {
	if(varObj.value == varValue) {
		varObj.value = "";
	}
}

function testValue(varObj,varValue) {
	if(varObj.value == "") {
		varObj.value = varValue;
	}
}

function getElementsByClassName(oElm, strTagName, strClassName)
{
	var arrElements = (strTagName == "*" && document.all)? document.all : oElm.getElementsByTagName(strTagName);
	var arrReturnElements = new Array();
	strClassName = strClassName.replace(/\-/g, "\\-");
	var oRegExp = new RegExp("(^|\\s)" + strClassName + "(\\s|$)");
	var oElement;
	
	for(var i=0; i<arrElements.length; i++)
	{
		oElement = arrElements[i];
		if(oRegExp.test(oElement.className)) 
		{
			arrReturnElements.push(oElement);
		}
	}
	
	return (arrReturnElements)
}

function setLyr(obj,lyr,offset) 
{
	var newY = findPosY(obj);
	//alert("Y: " + newY + " | offset: " + offset);
	newY = newY - offset;
	document.getElementById(lyr).style.top = newY + 'px';
}

function findPosY(obj) 
{
	var curtop = 0;
	var printstring = '';
	if (obj.offsetParent)
	{
		while (obj.offsetParent)
		{
			printstring += ' element ' + obj.tagName + ' has ' + obj.offsetTop;
			curtop += obj.offsetTop
			obj = obj.offsetParent;
		}
	}
	else if (obj.y)
	{
		curtop += obj.y;
	}
	return curtop;
}

function setElementsVisibility(eContainer, aTagNames, sVisibility) {
	var tmp, i, j;
	var elements = [];
	for (i = 0; i < aTagNames.length; i++) {
		tmp = eContainer.getElementsByTagName(aTagNames[i]);
		for (j = 0; j < tmp.length; j++) {
			elements[elements.length] = tmp[j];
		}
	}	
	for (i = 0; i < elements.length; i++) {
		elements[i].style.visibility = sVisibility;
	}
 }

function isZip(s){
   reZip = new RegExp(/(^\d{5}$)|(^\d{5}-\d{4}$)/);
   if (!reZip.test(s)) {
		alert("Please enter a valid zip code");
		return false;
   }
return true;
} 


/*
topNavDropDown = function() {
	if (document.getElementById) {
		navRoot = document.getElementById("topNavigation");
		for (i=0; i<navRoot.childNodes.length; i++) {
			node = navRoot.childNodes[i];
			if (node.nodeName=="LI") {
				node.onmouseover=function() {
					this.className+=" over";
					setElementsVisibility(document.getElementById("body-container"), ['select'], 'hidden');
				}
				node.onmouseout=function() {
					this.className=this.className.replace(" over", "");
					setElementsVisibility(document.getElementById("body-container"), ['select'], 'visible');
				}
			}
		}
	}
}


window.onload = function()
{
	topNavDropDown();
}
*/

/*
if (document.body.addEventListener) 
{ 
	document.body.addEventListener('load', new function(){topNavDropDown();}, false); 
}
else if (document.body.attachEvent)
{
	document.body.attachEvent('onLoad', new function(){topNavDropDown();});
}
*/