$("#nav a#about").tooltip({ 
      	onShow: function() {
			this.getTrigger().addClass("current_abt");
		},
		onHide: function() {
			this.getTrigger().removeClass("current_abt");
		},		
        relative: 'false',
        position: "bottom left",
        offset:  [10, 440], 
        effect: 'slide',
        bounce: 'true'
      });
      $("#nav a.process").tooltip({ 
      	onShow: function() {
			this.getTrigger().addClass("current_pro");
		},
		onHide: function() {
			this.getTrigger().removeClass("current_pro");
		},
        relative: 'false',
        position: "bottom center",
        offset:  [10, 0], 
        effect: 'slide',
        bounce: 'true'
      });
      $("#nav a.service").tooltip({
      	onShow: function() {
			this.getTrigger().addClass("current_srv");
			$('#slider_controls').hide();
		},
		onHide: function() {
			this.getTrigger().removeClass("current_srv");
			$('#slider_controls').show();
		}, 
        relative: 'false',
        position: "bottom right",
        offset:  [10, -440], 
        effect: 'slide',
        bounce: 'true'
      });