function extrarows() {
	var row1  = document.getElementById('row1');
	var row2  = document.getElementById('row2');
	var row3  = document.getElementById('row3');
	var row4  = document.getElementById('row4');
	var advanced  = document.getElementById('advanced');
	if(row1.style.display=='none') {
		row1.style.display='block';
		row2.style.display='block';
		row3.style.display='none';
		row4.style.display='block';
		ad = "Basic";
	} else {
		row1.style.display='none';
		row2.style.display='none';
		row3.style.display='none';
		row4.style.display='none';
		ad = "Advanced";
	}
}

function waitpage(){
		var w = 440, h = 200;
		if (document.all || document.layers) {
		   w = screen.availWidth;
		   h = screen.availHeight;
		}
		var popW = 480, popH = 200;
		var leftPos = (w-popW)/2, topPos = (h-popH)/2;
			window.open('loading.php','Loading','toolbar=no,location=no,status=no,menubar=no,scrollbars=no,resizable=no,width=' + popW + ',height=' + popH + ',top=' + topPos + ',left=' + leftPos);
}