function initCalc(step,params)
{
	var html = $.ajax({
		url: "/_ajax/calc/index.php?step="+step+params,
		async: false
			
	}).responseText;	
	document.getElementById('kalkulator').innerHTML = html;
}

function changeDimensions(step)
{
	var params = "nw="+document.getElementById('szerban').value+"&nh="+document.getElementById('wysban').value;
	initCalc(step,'&'+params);
}

function collectPages(step)
{
	var params = '&pages=';
	for(var a=1;a<=200;a++)
	{
		if (document.getElementById('pages_'+a) && document.getElementById('pages_'+a).checked == true)
		{
			params+=document.getElementById('pages_'+a).value+',';
		}
	}
	initCalc(step,'&'+params);
}

function openStepThree(valu)
{
	document.getElementById('step3day').style.display  = (valu ? 'block' : 'none');
	document.getElementById('step3day_value').value  = (valu ? document.getElementById('step3day_value').value : '');
	document.getElementById('next').style.display  = (document.getElementById('step3day_value').value ? 'block' : 'none');
}
function openStepThree2(valu)
{
	document.getElementById('next').style.display  = (valu ? 'block' : 'none');
}

function setupMaanden(step)
{
	var params = '&maanden='+document.getElementById('step3day_value').value;
	initCalc(step,'&'+params);
}