function showLoginForm() {	
	if (Browser.Engine.trident) { 
 	return true; 
 	}        
 	if (!winFormLogin) {             
 	winFormLogin=new StickyWin.Modal({content: $('login-form'), closeClassName: 'close-block', useIframeShim: false});
	}
	winFormLogin.show();
	winFormLogin.pin(true);
	return false;
}

function hideLoginForm() {
	winFormLogin.hide();
}

var winFormLogin=false;