img1 = new Image;
img1.src = 'images/nav/navbuttonclick_bg.gif';
img2 = new Image;
img2.src = 'images/nav/navbuttonover_bg.gif';
img3 = new Image;
img3.src = 'images/nav/navbutton_bg.gif';

//navList = new Array('community_dev','meeting_dates','police_dept','public_works','contact_us','home');
function closeAll(whichList) {
	for (var f = 0; f < whichList.length; f++) {
		currentElement = document.getElementById(whichList[f]+'_content');
		//alert(whichList[f]);
			currentElement.style.display = 'none';
		//buttonElement.style.backgroundImage = 'url(images/nav/navbutton_bg.gif)';
	}
	//alert(toString(whichList));
}

function toggleDisplay(which,whichList) {
	//alert(which);
	for (var f = 0; f < whichList.length; f++) {
		currentElement = document.getElementById(whichList[f]+'_content'); 
		buttonElement = document.getElementById(whichList[f]);
		if (which == whichList[f]+'_content') {
			currentElement.style.display ='block';
			if (buttonElement) buttonElement.style.backgroundImage = 'url(images/nav/navbuttonclick_bg.gif)';
		} else {
			currentElement.style.display ='none';
			if (buttonElement) buttonElement.style.backgroundImage = 'url(images/nav/navbutton_bg.gif)';
		}
	}
}

function toggleDisplayCool(which) {
	//alert(which);
	// decide which list to use here
	lists = new Array('navListTop','navListSub');
	for (var l = 0; l < lists.length; l++) {
		eval('if ('+lists[l]+'.toString().indexOf(which)) whichList = lists[l];');
	
		eval('whichList = '+whichList);
		//eval('toggleDisplay("'+which+'",'+whichList+');');
		//alert(whichList);
		// ok, back to normal stuff
		for (var f = 0; f < whichList.length; f++) {
			currentElement = document.getElementById(whichList[f]+'_content'); 
			buttonElement = document.getElementById(whichList[f]);
			if (which == whichList[f]+'_content') {
				currentElement.style.display ='block';
				if (buttonElement) buttonElement.style.backgroundImage = 'url(images/nav/navbuttonclick_bg.gif)';
			} else {
	//			currentElement.style.display ='none';
				if (buttonElement) buttonElement.style.backgroundImage = 'url(images/nav/navbutton_bg.gif)';
			}
		}
	}
}

function doButtonRollover(obj,which) {
	contentObj = document.getElementById(obj.id+'_content');
	if (contentObj.style.display != 'block') {
		if (which == 'over') {
			obj.style.backgroundImage = 'url(images/nav/navbuttonover_bg.gif)';
		} else if (which == 'off') {
			obj.style.backgroundImage = 'url(images/nav/navbutton_bg.gif)';
		}
	}
}