Untitled

<html>
<body style="text-align:center" background="bestwindows.jpg">
<form>
  <h1>Factorial:</h1>
  <b>!</b><input type="text" name="t3" id="fac"></input>
  <h1>Table:</h1>
  <b>Rows:</b><input type="text" name="t2" id="tab1"><b>Columns:</b><input type="text" name="t2" id="tab2">
  <br>
  <h1>(x+y)<sup>2</sup>/(x-y)<sup>2</sup></h1>
  <b>X:</b><input type="text" name="t3" id="sum1"><b>Y:</b><input type="text" name="t3" id="sum2">
</form>
	<button onclick="funkcija()"><b>Paspausk Mane</b></button>
	<p id="ats1" style="font-weight: bold;"></p>
	<br>
<script>
	function funkcija() {
		var fac = parseInt(document.getElementById("fac").value);
		var tab1 = parseInt(document.getElementById("tab1").value);
		var tab2 = parseInt(document.getElementById("tab2").value);
		var sum1 = parseInt(document.getElementById("sum1").value);
		var sum2 = parseInt(document.getElementById("sum2").value);
		if(isNaN(fac)&&isNaN(tab1)&&isNaN(tab2)&&isNaN(sum1)&&isNaN(sum2)){
			document.getElementById("ats1").innerHTML = "<b>Ivesk Numeri!!!!!!!</b>";}
		if(!isNaN(fac)){
			var ats=fac, i=fac-1;
			do{
				ats*=i;
				i--;}
			while (i > 0);
			document.getElementById("ats1").innerHTML = ats;}
		else if((!isNaN(tab1))&&(!isNaN(tab2))){
			var ats="<table border=1 align=center bgcolor=white>";
			for (var i=0; i<tab1; i++){
				ats+="<tr>";
				for (var j=0; j<tab2; j++){
					ats+="<td>xD</td>";}
				ats+="</tr>";}
			ats+="</table>";
			document.getElementById("ats1").innerHTML = ats;}
		else if((!isNaN(sum1))&&(!isNaN(sum2))){
			z=Math.pow(sum1+sum2,2)/Math.pow(sum1-sum2,2);
			document.getElementById("ats1").innerHTML = z;}
		}
	function funkcija2() {
		var ats=0;
		for (i=1; i<=16; i++){
			var x = parseInt(document.getElementById("lol"+i).textContent);
			ats+=x;}
		document.getElementById("ats2").innerHTML = ats;}
</script>
</body>
</html>