var bIsVisible = true;

function FlashSlogan(){
	try{
		if( bIsVisible )
			document.getElementById("flashing_slogan").style.visibility = 'hidden';
		else
			document.getElementById("flashing_slogan").style.visibility = '';
		
		bIsVisible = !bIsVisible;
	}
	catch(e){
		
	}
}  

self.setInterval('FlashSlogan()',500);