tabCount = 3;
function activateTab(i) {
	document.getElementById( "tab-left:"+i ).src="byra/images/tab-left_active.gif";
	document.getElementById( "tab-bg:"+i ).style.background="url(byra/images/tab-bg_active.gif)";
	document.getElementById( "tab-right:"+i ).src="byra/images/tab-right_active.gif";
	document.getElementById( "tab-body:"+i ).style.display='block';
}
function deactivateTab(i) {
	document.getElementById( "tab-left:"+i ).src="byra/images/tab-left_inactive.gif";
	document.getElementById( "tab-bg:"+i ).style.background="url(byra/images/tab-bg_inactive.gif)";
	document.getElementById( "tab-right:"+i ).src="byra/images/tab-right_inactive.gif";
	document.getElementById( "tab-body:"+i ).style.display='none';
}
function changeActiveTab(i) {
	for( j=0; j < tabCount; ++j ) {
		if( j==i ) {
			activateTab(j);
		} else {
			deactivateTab(j);
		}
	}
}