function reg_update() {
	var pattern = new RegExp(document.getElementById('pattern_reg').value);
	var string = document.getElementById('input_reg').value;
	var replacement = document.getElementById('replacement_reg').value;
		var str = string.replace(pattern, replacement);
		document.getElementById('output_reg').value = str;
}

function update() {
	str=document.getElementById('input_a0b').value;
	if (/MSIE (\d+\.\d+);/.test(navigator.userAgent)){
		str=str.replace(/<form/g,'<for');	
	}
	document.getElementById('output_a0b').innerHTML = str;
}

function form_action(actions, form_name) {
	if (actions != 'get') {
		form_name.target = '_blank';
		form_name.action = actions+'.php';
	} else {
		form_name.target = '_self';
		form_name.action = '';
	}
	form_name.submit();
}

function js_update() {
	document.getElementById('output_js').src = 'js.php?js='+document.getElementById('input_js').value;
	return false;
}