function useSameOpeningHours(){
 	if(sameOpeningHours){
	 	document.getElementById('mo').innerHTML = "MO-FR";
	 	
	 	document.getElementById('tu').style.visibility = 'hidden';
	 	document.getElementById('we').style.visibility = 'hidden';
	 	document.getElementById('th').style.visibility = 'hidden';
	 	document.getElementById('fr').style.visibility = 'hidden';
	 	
	 	document.getElementById('op2').style.visibility = 'hidden';
	 	document.getElementById('op3').style.visibility = 'hidden';
	 	document.getElementById('op4').style.visibility = 'hidden';
	 	document.getElementById('op5').style.visibility = 'hidden';
	 	
	 	document.getElementById('cl2').style.visibility = 'hidden';
	 	document.getElementById('cl3').style.visibility = 'hidden';
	 	document.getElementById('cl4').style.visibility = 'hidden';
	 	document.getElementById('cl5').style.visibility = 'hidden';
	 	
	 	document.getElementById('op9').style.visibility = 'hidden';
	 	document.getElementById('op10').style.visibility = 'hidden';
	 	document.getElementById('op11').style.visibility = 'hidden';
	 	document.getElementById('op12').style.visibility = 'hidden';
	 	
	 	document.getElementById('cl9').style.visibility = 'hidden';
	 	document.getElementById('cl10').style.visibility = 'hidden';
	 	document.getElementById('cl11').style.visibility = 'hidden';
	 	document.getElementById('cl12').style.visibility = 'hidden';
	 	sameOpeningHours = false;
 	} else {
 		document.getElementById('mo').innerHTML = "MO";
	 	
	 	document.getElementById('tu').style.visibility = 'visible';
	 	document.getElementById('we').style.visibility = 'visible';
	 	document.getElementById('th').style.visibility = 'visible';
	 	document.getElementById('fr').style.visibility = 'visible';
	 		 	
	 	document.getElementById('op2').style.visibility = 'visible';
	 	document.getElementById('op3').style.visibility = 'visible';
	 	document.getElementById('op4').style.visibility = 'visible';
	 	document.getElementById('op5').style.visibility = 'visible';
	 	
	 	document.getElementById('cl2').style.visibility = 'visible';
	 	document.getElementById('cl3').style.visibility = 'visible';
	 	document.getElementById('cl4').style.visibility = 'visible';
	 	document.getElementById('cl5').style.visibility = 'visible';
	 	
	 	document.getElementById('op9').style.visibility = 'visible';
	 	document.getElementById('op10').style.visibility = 'visible';
	 	document.getElementById('op11').style.visibility = 'visible';
	 	document.getElementById('op12').style.visibility = 'visible';
	 	
	 	document.getElementById('cl9').style.visibility = 'visible';
	 	document.getElementById('cl10').style.visibility = 'visible';
	 	document.getElementById('cl11').style.visibility = 'visible';
	 	document.getElementById('cl12').style.visibility = 'visible';
	 	sameOpeningHours = true;
 	}
} 

var sameOpeningHours = true;