var nrzile = 0;

function makeTotal () {
	document.getElementById('total').value = 
		parseInt(document.getElementById('pr2').value) +
		parseInt(document.getElementById('pr3').value);
}

function accesorii (obj, p1, p2, p3, p4, p5, p6, p7) {
	var val=0;
	if (nrzile>0 && nrzile<=3) val=p1*nrzile;
	if (nrzile>3 && nrzile<=7) val=p2*nrzile;
	if (nrzile>7 && nrzile<=14) val=p3*nrzile;
	if (nrzile>14 && nrzile<=21) val=p4*nrzile;
	if (nrzile>21) val=p5*nrzile;

	if (obj.checked) {
	document.getElementById('total').value = parseInt(document.getElementById('total').value)+val;
	document.getElementById('pr3').value = parseInt(document.getElementById('pr3').value)+val;
	document.getElementById('pr4').value = parseInt(document.getElementById('pr4').value)+p7;
	} else {
	document.getElementById('total').value = parseInt(document.getElementById('total').value)-val;
	document.getElementById('pr3').value = parseInt(document.getElementById('pr3').value)-val;
	document.getElementById('pr4').value = parseInt(document.getElementById('pr4').value)-p7;
	}
	makeTotal();
}

function zile() {
	if (document.getElementById('data1').value.length > 0 && document.getElementById('data2').value.length > 0) {
		var oldnrzile=nrzile;
		var temp=document.getElementById('data1').value;
		var d1= new Date(temp.substr(6,4), temp.substr(3,2)-1, temp.substr(0,2));
		var temp=document.getElementById('data2').value;
		var d2= new Date(temp.substr(6,4), temp.substr(3,2)-1, temp.substr(0,2));
		if (d2>d1) {
			nrzile = Math.round((d2-d1)/(1000*60*60*24));

			t1= parseInt(document.getElementById('ora1').value.substr(0.2));
			t2= parseInt(document.getElementById('ora2').value.substr(0.2));

			if (document.getElementById('ora1').value.search(/pm/)>0) t1 = t1 + 12;
			if (document.getElementById('ora2').value.search(/pm/)>0) t2 = t2 + 12;

			if (t2>t1) nrzile = nrzile+1; 
			document.getElementById('pr1').value = nrzile;
			if (oldnrzile > 0) {
			document.getElementById('pr3').value = parseInt(document.getElementById('pr3').value) / oldnrzile * nrzile;
			}
			var val=0;
			if (nrzile>0 && nrzile<=3)   val = cp1 * nrzile;
			if (nrzile>3 && nrzile<=7)   val = cp2 * nrzile;
			if (nrzile>7 && nrzile<=14)  val = cp3 * nrzile;
			if (nrzile>14 && nrzile<=21) val = cp4 * nrzile;
			if (nrzile>21)               val= val = cp5 * nrzile;
			document.getElementById('pr2').value = val;
		} else {
			alert ("Interval invalid");
		}
	}
	makeTotal();
}