Click on dynamically created elements

Use .on() (for new jquery versions – >= 1.7):

$(document).on('click', '#btnALERT1', function()
{
alert("Hello");
});

or: –
$('#btnALERT1').live('click', function()
{
alert("Hello");
});

Or:

$(document).delegate('#btnALERT1', 'click', function()
{
alert("Hello");
});