function new_window(theURL,winName,width,height){
	var features = 	'menubar=yes,'+
					'toolbar=no,'+
					'scrollbars=yes,'+
					'location=no,'+
					'status=no,'+
					'resizable=yes,'+
					'width='+width+','+
					'height='+height+','+
					'top=50,'+
					'left=200';
	window.open(theURL,winName,features);
}

function cek_has_input(id){ 
	if(document.getElementById(id)){
		if(document.getElementById(id).value==1){ 
			alert('Telah dilakukan proses sebelumnya');
			return false;
		}
	}
	return true;
}