//Javascript

var isIE6 = false;
var browserName = navigator.appName.toLowerCase();
if (browserName.indexOf('explorer') > -1) {
    tmp=navigator.appVersion.split("MSIE")
    browserVersion=parseFloat(tmp[1])
    if (browserVersion<7) isIE6=true;
}

var lastNavDiv = null;
toggleNav = function(sender) {
    var subnavDiv = sender.parentNode.getElementsByTagName('div')[0];
    if (lastNavDiv) {
        if (lastNavDiv != subnavDiv) {
            lastNavDiv.style.display='none';
        }
    }
    if (subnavDiv) {
        if (subnavDiv.childNodes.length > 0) { // If no sub-nav options, don't show the container
            if (subnavDiv.style.display=='none') {
                subnavDiv.style.display='block';
                lastNavDiv = subnavDiv;
            } else {
                subnavDiv.style.display='none';
            }
        }
    }
    sender.blur();
}

function swapPNG(obj, scale) {
    if (isIE6) {
		var scaleStr = '';
        if (scale) scaleStr = ", sizingMethod='scale'";
        var strSrc = obj.src;
        obj.src='/images/dot_tran.gif';
        obj.style.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='" + strSrc + "'" + scaleStr + ");";
    }
}

function setMainNav(str) {
	var mainNavSlots = new Array();
		mainNavSlots[mainNavSlots.length] = 'treatment';
		mainNavSlots[mainNavSlots.length] = 'facility';
		mainNavSlots[mainNavSlots.length] = 'privacy';
		//mainNavSlots[mainNavSlots.length] = 'news';
		mainNavSlots[mainNavSlots.length] = 'about';
		mainNavSlots[mainNavSlots.length] = 'contact';
	
	var navDiv = document.getElementById('main_nav');
	var navLinks = navDiv.getElementsByTagName('div');
	
	var navIndex = -1;
	for (var i=0; i<mainNavSlots.length; i++) {
	   if (mainNavSlots[i]==str) {
	       navIndex = i;
	       break;
	   }
	}
	
	if (navIndex > -1) {
	   if (navLinks[i]) toggleNav(navLinks[i]);
	}
}