this.tooltip = function(){      
        /* CONFIG */            
                xOffset = -5;
                yOffset = -10;           
                // these 2 variable determine popup's distance from the cursor
                // you might want to adjust to get the right result             
        /* END CONFIG */                
        $("a.tooltip").hover(function(e){                                                                                         
                this.t = this.title;
                this.title = "";                                                                          
                $("body").append("<p id='tooltip'>"+ this.t +"</p>");
                $("#tooltip")
                        .css("top",(e.pageY - xOffset) + "px")
                        .css("left",(e.pageX + yOffset) + "px")
                        .fadeIn("fast");                
    },
        function(){
                this.title = this.t;            
                $("#tooltip").remove();
    }); 
        $("a.tooltip").mousemove(function(e){
                $("#tooltip")
                        .css("top",(e.pageY - xOffset) + "px")
                        .css("left",(e.pageX + yOffset) + "px");
        });                     
};