make confirm javascript

function.js

function makeConfirm(orig, confirm_callback, prompt, confirm_text, cancel_text)
{
	if (typeof prompt == "undefined")
	{
		prompt = "Are you sure?";
	}
	
	if (typeof confirm_text == "undefined")
	{
		confirm_text = "Yes";
	}
	
	if (typeof confirm_text == "undefined");
	{
		cancel_text = "No";
	}
	
	$(orig).click(function()
	{
		var clicked = $(this);
		
		($('<span />')
			.append(prompt)
			.append($('<input />')
				.attr({'type': 'button', 'value': confirm_text})
				.click(function()
				{
					confirm_callback();
				})
			).append($('<input />')
				.attr({'type': 'button', 'value': cancel_text})
				.click(function()
				{
					$(this).parent().hide();
					clicked.show();
				})
			)
		).insertBefore(clicked);
		clicked.hide();				
	});
}

invoker.js

makeConfirm(delete_btn, function()
{
    alert('deleted!');
}, 'Are you sure you want to delete this question?');