$(function() {
	function split( val ) {
		return val.split( /,\s*/ );
	}
	function extractLast( term ) {
		return split( term ).pop();
	}
	$( "#search" ).focus(function(){
		if ($(this).val() == "SEARCH CESSNA AIRCRAFT PARTS" || $(this).val() == "Enter Part Number Here") {
			$(this).val("");
		}
		return true;
	});
	$( "#search" )
	// don't navigate away from the field on tab when selecting an item
	.bind( "keydown", function( event ) {
		if ( event.keyCode === $.ui.keyCode.TAB &&
				$( this ).data( "autocomplete" ).menu.active ) {
			event.preventDefault();
		}
	})
	.autocomplete({
		source: function( request, response ) {
			$.getJSON( "live_search.php", {
				term: extractLast( request.term )
			}, response );
		},
		search: function() {
			// custom minLength
			var term = extractLast( this.value );
			if ( term.length < 2 ) {
				return false;
			}
		},
		focus: function() {
			// prevent value inserted on focus
			return false;
		},
		select: function( event, ui ) {
			var terms = split( this.value );
			// remove the current input
			terms.pop();
			// add the selected item
			terms.push( ui.item.value );
			// add placeholder to get the comma-and-space at the end
			terms.push( "" );
			this.value = terms.join( ", " );
			return false;
		}
	});

});