/*--------
Add default prompt for input fields (defined by jQuery selector),  make it dissapear on click and reappear on blur .
Disabled, when non-default data present.
Default prompt defined in 'rel' attribute of the input field.
--------*/
function input(jQuerySelector) {
	var field = $(jQuerySelector);
	var prompt = field.attr('rel');
		
	if (field.val() == '')
		field.val(prompt);

	field.click(function() {
		if (field.val() == prompt)
			field.val('');
	});
		
	field.blur(function() {
		if (field.val() == '')
			field.val(prompt);
	});
}
/*--------
Disable submit for form (defined by jQuery selector) with empty input
--------*/
function prepare_search (jQuerySelector) {
	var form = $(jQuerySelector);
	var field = form.find('input');
	form.submit(function() {
		if (field.val() != '') {
			window.location = getRoot('search_index/all/search:'+field.val()+'/');
		}
		return false;
	});
}