how to set image title attribute using jquery?

Question

here my code-

---
<ul>
                <li id="d1"><a href="images/soluinfo1.jpg"><img src="images/menu_hosp.jpg" border="0"></a></li>
                <li id="d2"><a href="images/soluinfo2.jpg"><img src="images/menu_edu.jpg" border="0"></a></li>
                <li id="d3"><a href="images/soluinfo3.jpg"><img src="images/menu_enter.jpg" border="0"></a></li>
                <li id="d4"><a href="images/soluinfo4.jpg"><img src="images/menu_retail.jpg" border="0"></a></li>
                <li id="d5"><a href="images/soluinfo5.jpg"><img src="images/menu_health.jpg" border="0"></a></li>
                <li id="d6"><a href="images/soluinfo6.jpg"><img src="images/menu_real.jpg" border="0"></a></li>
                <li id="d7"><a href="images/soluinfo7.jpg"><img src="images/menu_tel.jpg" border="0"></a></li>
            </ul>

Jquery function-

function imgchange()
    {
        $('.smenu li').mouseover( function(){
        var src = $(this).find('a').attr('href');
        $('.hbg').css('background-image', 'url(' + src + ')');
        });     
    }

this is working fine background image is getting changed but I want to set the title attribute of the image too, so that when user goes over there tooltip shoud come.like-
<img src="---" title="my tootip info" >

Answer 1

function imgchange()
    {
        $('.smenu li').mouseover( function(){
            var src = $(this).find('a').attr('href');
            $('.hbg').css('background-image', 'url(' + src + ')');

            $('.hbg').attr('title', 'my tootip info'); // <= DO THIS

        });     
    }

EDIT
I suppose you are making some sort of slideshow, and $('.hbg') is the slide view port.
So you should set the title for this element. I edited the code to reflect this.