这就是我最终做的事情,并且按照我的意愿工作。可能有一种方法可以简化这一点,我愿意接受建议。感谢那些回答的人。
jQuery(document).ready(function($) {
//rollover swap images with rel 
  var img_src = "";
  var new_src = "";
$('.rollover').click(function() {
        if($(this).hasClass("clicked"))
    {
            //do nothing if this element has already been clicked
    }
    else 
    {   
        //Unbind the hover effect from this element
        $(this).removeClass("rollover");
        $(this).unbind('mouseenter').unbind('mouseleave')
        //Go through and find anything having 'clicked' class -
        //in theory, there should only be one element that has the 'clicked' class at any given time.
        $('.clicked').each(function (){
                $(this).removeClass("clicked");
                $(this).addClass("rollover");
                //Swap the images
                img_src = $(this).attr('src'); //grab original image
                new_src = $(this).attr('rel'); //grab rollover image
                $(this).attr('src', new_src); //swap images
                $(this).attr('rel', img_src); //swap images
                //Rebind hover (since we unbound it back up there ^^) to this *specific* element.
                //If you do $(".rollover") to rebind, it kills all the other existing binds and binds ONLY this element.
                $(this).hover(function(){
                        img_src = $(this).attr('src'); //grab original image
                        new_src = $(this).attr('rel'); //grab rollover image
                        $(this).attr('src', new_src); //swap images
                        $(this).attr('rel', img_src); //swap images
                        });
                }); 
        $(this).addClass("clicked");
    } 
});
$(".rollover").hover(function(){
      img_src = $(this).attr('src'); //grab original image
      new_src = $(this).attr('rel'); //grab rollover image
      $(this).attr('src', new_src); //swap images
      $(this).attr('rel', img_src); //swap images
    });
});