function openWindow(url,w,h) {
	a=(screen.width-w)/2;
	b=(screen.height-h)/2;
	//alert(a+' * '+b);
	window.open(url,'wndw','width='+w+', height='+h+', scrollbars=yes, resizable=yes,top='+b+',left='+a+'');
	return false;
}





var lightingSelected=0;
function topmenuLighting(a,b) {
	if(lightingSelected!=0)document.getElementById('lighting'+lightingSelected).className='';
	if(a==true) {
		document.getElementById('lighting'+b).className='topmenu-lighting';
	} else {
		document.getElementById('lighting'+b).className=' ';
		if(lightingSelected!=0)document.getElementById('lighting'+lightingSelected).className='topmenu-lighting';
	}
}