function checkNumber(number)
{
	var i;
	var valid;

	if(number!="")  valid = true; 
	for(i=0;i<number.length;i++) {
		if(number.charAt(i)<'0' || number.charAt(i)>'9') {
			valid = false;
			break;
		};	
	}
	return valid;
}

function check() 
{
	/*
	if(!checkNumber(formSearch.ltanah1.value)) {
		alert("Harus diisi angka");
		formSearch.ltanah1.focus();
	}
	else if(!checkNumber(formSearch.ltanah2.value)) {
		alert("Harus diisi angka");
		formSearch.ltanah2.focus();
	}
	else if(!checkNumber(formSearch.lbangunan1.value)) {
		alert("Harus diisi angka");
		formSearch.lbangunan1.focus();
	}
	else if(!checkNumber(formSearch.lbangunan2.value)) {
		alert("Harus diisi angka");
		formSearch.lbangunan2.focus();
	}
	else if(!checkNumber(formSearch.harga1.value)) {
		alert("Harus diisi angka");
		formSearch.harga1.focus();
	}
	else if(!checkNumber(formSearch.harga2.value)) {
		alert("Harus diisi angka");
		formSearch.harga2.focus();
	}
	*/

	if(formSearch.ltanah1.value=="") {
		alert("Harus diisi angka");
		formSearch.ltanah1.focus();
	}
	else if(formSearch.ltanah2.value=="") {
		alert("Harus diisi angka");
		formSearch.ltanah2.focus();
	}
	else if(formSearch.lbangunan1.value=="") {
		alert("Harus diisi angka");
		formSearch.lbangunan1.focus();
	}
	else if(formSearch.lbangunan2.value=="") {
		alert("Harus diisi angka");
		formSearch.lbangunan2.focus();
	}
	else if(formSearch.harga1.value=="") {
		alert("Harus diisi angka");
		formSearch.harga1.focus();
	}
	else if(formSearch.harga2.value=="") {
		alert("Harus diisi angka");
		formSearch.harga2.focus();
	}	
	else formSearch.submit();
}