function emailunsubscribe()
/* This function calls the function to pop up a new HTML page for the email subscription
// postcondition: email html page is displayed
*/
{
    url = "/cdc/template/email_unsubscribe.htm";
    popitup(url);
}

function popitup(url)
/* This function creates a new window to display email subscription result
// precondition: url must be valid
// postcondition: email html page is displayed
*/
{
	newwindow=window.open(url,'name','height=500,width=500');
	if (window.focus) {newwindow.focus()}
	return false;
}