// JavaScript Document
function toggle(which) 
{ 
   var el = document.getElementById(which); 
   el.style.display = (el.style.display == 'none') ? 'block' : 'none'; 
   return false; 
} 

function toggle_param(which) 
{ 

	men1 = document.getElementById("instr");
	men1.style.display='none';

	men1 = document.getElementById("spec");
	men1.style.display='none';

    var el = document.getElementById(which); 
    el.style.display = (el.style.display == 'none') ? 'block' : 'none'; 
    return false; 
} 




function toggle_item(which) 
{ 

	
	
	men1 = document.getElementById("info");
	men1.style.display='none';
	men1 = document.getElementById("pics");
	men1.style.display='none';

	men1 = document.getElementById("instr");
	men1.style.display='none';

	men1 = document.getElementById("configuration");
	men1.style.display='none';

   var el = document.getElementById(which); 
   el.style.display = (el.style.display == 'none') ? 'block' : 'none'; 
   return false; 
} 


// Number cheking
function checkNumber(tipaCipars) 
{ 
	var myVal = parseInt(tipaCipars.value);
	if (isNaN(myVal)) {
		alert ('This is not a number. Only numbers please.');
		tipaCipars.value = '';
		return false;
	} else {
		tipaCipars.value = myVal;
	}
	
	return true; 
}