var hTabs = new Array(4);
hTabs[0] = "h_tab1";
hTabs[1] = "h_tab2";
hTabs[2] = "h_tab3";
hTabs[3] = "h_tab4";
var selTab = "h_tab1";
var divOver = false;
var rotCount = 0;
function showTab(id) {
	for ( var i=0; i<hTabs.length; i++ ) {
		document.getElementById(hTabs[i]).className = "div_h_tab_def";
	}
	document.getElementById(id).className = "div_h_tab_sel";
	selTab = id;
}

function rotTabs() {
	var tab = null;
	for ( var i=0; i<hTabs.length; i++ ) {
		if ( hTabs[i] == selTab ) {
			if ( i < hTabs.length-1 )
				tab = hTabs[i+1];
			else 
				tab = hTabs[0];
		}
	}
	if ( tab != null && divOver == false ) {
		showTab(tab);
		rotCount++;
	}
	if ( rotCount < 20 )
		setTimeout('rotTabs()', 7000);
}

function onTabOver(id) {
	divOver = true;
}

function onTabOut(id) {
	divOver = false;
}

function onOptOver(id) {
	document.getElementById(id).className = "bg_h_opt_sel";
}

function onOptOut(id) {
	document.getElementById(id).className = "bg_h_opt_def";
}