//preload images for global navigation
nav_midwife_on = new Image();
nav_midwife_on.src = '/pix/nav/nav_midwife_on.gif';

nav_nwgynecology_on = new Image();
nav_nwgynecology_on.src = '/pix/nav/nav_nwgynecology_on.gif';

nav_nwperinatal_on = new Image();
nav_nwperinatal_on.src = '/pix/nav/nav_nwperinatal_on.gif';

nav_obgyn_on = new Image();
nav_obgyn_on.src = '/pix/nav/nav_obgyn_on.gif';

nav_services_on = new Image();
nav_services_on.src = '/pix/nav/nav_services_on.gif';

function navRoll(imName){
	whichImg = document.images[imName].src;
	
		if (whichImg.indexOf('_on') <= 0) {
			if (document.images) { 
				document.images[imName].src = '/pix/nav/' + imName + '_on.gif';
			};
		 }
}
function sectionOn(imName) { 
		if (section != 'home') {
		imName = 'nav_' + imName;
		whichImg = document.images[imName].src;
		if (whichImg.indexOf('_on') <= 0) {
		if (document.images) { 
		document.images[imName].src = '/pix/nav/' + imName + '_on.gif';
		};
		}
			 }
}
function navOff(imName) {
		whichImg = document.images[imName].src;
		if (whichImg.indexOf(section) <= 0) {
		if (document.images) { 
		document.images[imName].src = '/pix/nav/' + imName + '.gif' 
		};
		}
}

function nav(section) {
		if (section != 'home') {
		showSubnav(section);
		sectionOn(section);
		}
}
function showSubnav(whichSection) {
		if (section != 'home') {
		if (whichSection != '') {
		subID = 'subnav' + whichSection;
		document.getElementById(subID).style.display = 'block';
		}
		}

}

function Popper(URL,WinID,Width,Height,Left,Top,Resizable,Scrollbars) {
window.open(URL,WinID,'width='+Width+',height='+Height+',left='+Left+',top='+Top+',channelmode=0,dependent=0,directories=0,location=0,menubar=0,resizable='+Resizable+',scrollbars='+Scrollbars+',status=0,toolbar=0');
}	

function showHidden(whichOne) {
	hidden = whichOne
	document.getElementById(hidden).style.display = 'block'; 
}