Javascript Animate Image Resize

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I am trying to make an image animate and make it larger. I have gotten it to change size but I am now trying to make it so none of the surrounding elements don't get moved around as well. I am using jQuery to do the animations and for some reason it wont increment the margin's every step. It only does it after it has finished. I thought I read the jQuery docs correctly. Here is my code so far:

$(document).ready(function(){
    $(".image").mouseenter(function(){
        $(this).animate({height: "176px", width: "250px"},
            {
            step: function(now, fx) {
                $(this).css("margin-left","-=0.076");
                $(this).css("margin-right","-=0.084");
                $(this).css("margin-bottom","-=0.152");
            }
        });
    });
    $(".image").mouseleave(function(){
        $(this).animate({height: "100px", width: "174px"},
            {
            step: function(now, fx) {
                $(this).css("margin-left","+=0.076");
                $(this).css("margin-right","+=0.084");
                $(this).css("margin-bottom","+=0.152");
            }
        });
    });
});

Best Solution

Try CSS3 animations:

img{
-webkit-transform:scale(0.6); /*Webkit: Scale down image to 0.6x original size*/
-moz-transform:scale(0.6); /*Mozilla scale version*/
-o-transform:scale(0.6); /*Opera scale version*/
-webkit-transition-duration: 0.5s; /*Webkit: Animation duration*/
-moz-transition-duration: 0.5s; /*Mozilla duration version*/
-o-transition-duration: 0.5s; /*Opera duration version*/
}

.hovergallery img:hover{
-webkit-transform:scale(0.9); /*Webkit: Scale up image to most of the original size*/
-moz-transform:scale(0.9); /*Mozilla scale version*/
-o-transform:scale(0.9); /*Opera scale version*/
}

The above will scale the image on hover.