Getting mouseover and mousedown to work together

Getting mouseover and mousedown to work together

Hello all,

So I am trying to get data from the user. I have a table with lots of different cells repersenting 15min of a day. I need them to select when they are avaliable. I can get it to work when they just roll their mouse over the cell, or i can if they click. But what I want is for the cell to change when the user holds the mouse down and slides it over the times. So like a mousedown and mouseover event. Anyone have any ideas?
this is what i have so far
$(function(){
$(".ava").each(function(){
$(this).bind('mouseover',(function(e) {

var color = $("input:checked").attr("alt");

$(this).attr({bgcolor: color});

}));

});

});

thanks in advanced,