function newImage(imgname) {
        if (document.images) {
                nwimg = new Image();
                nwimg.src = imgname;
                return nwimg;
        }
}
var imgspreloaded = false;
function changeImages() {
        if (imgspreloaded == false) {
                return;
        }
        else if (document.images && (imgspreloaded == true)) {
                for (var i = 0; i < changeImages.arguments.length; i += 2) {
                        document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
                }
        }
        window.status = " ";
}
function preloadImages() {
        if (document.images) {
            teams_front       = newImage("images/tab_team_front.gif");
            assoc_back        = newImage("images/tab_assoc_back.gif");
	    imgspreloaded = true;
	}
}

function swap_tabs(name) {
        var teamMenuId = document.getElementById('menu_teams');
        var assocMenuId = document.getElementById('menu_assoc');
        var adminMenuId = document.getElementById('menu_admin');

	if (name == 'tab_teams') {
		changeImages('tab_teams','images/tab_team_front.gif');
		changeImages('tab_assoc','images/tab_assoc_back.gif');
        	assocMenuId.style.display = 'none';
        	teamMenuId.style.display = 'block';
        	adminMenuId.style.display = 'none';
	}
	else if (name == 'tab_assoc') {
		changeImages('tab_teams','images/tab_team_back.gif');
		changeImages('tab_assoc','images/tab_assoc_front.gif');
        	teamMenuId.style.display = 'none';
        	assocMenuId.style.display = 'block';
        	adminMenuId.style.display = 'none';
	}
}
function swap_tabsold(name) {
	var teamMenuId = document.getElementById('menu_teams');
	var assocMenuId = document.getElementById('menu_assoc');
	if (name == 'tab_teams') {
		changeImages('tab_teams','images/tab_team_on.gif');
		changeImages('tab_line','images/tab_line_team');
        	assocMenuId.style.display = 'none';
        	teamMenuId.style.display = 'block';
	}
	else if (name == 'tab_assoc') {
		changeImages('tab_teams','images/tab_team_off.gif');
		changeImages('tab_line','images/tab_line_assoc');
        	teamMenuId.style.display = 'none';
        	assocMenuId.style.display = 'block';
	}
}