why my jquery code is not supporting on chrome but mozilla support it a little

My jquery code is not running on chrome and in mozilla they are running but not as i wished…i want something like google search image you mouse over it get bigger and on mouse out it gets to original size…in mozilla they get stuck if i hover in and out too fast…any suggestion my code

jQuery(document).ready(function(){ 
  $('div .m1').hover(function(){ 

contr++;
$(".m1").css({ “height” : “138px”, “width” : “224px”, “left” : “0px”, “top” : “0px”});
relo();
$(this).parent().prev(‘span’).removeClass(“spankjiu”);
$(this).children().children().animate({“width”:“300px”, “height”:“200px”},“normal”);

  $(".spankjiu").fadeIn(100);
  $(".spankjiu").css({"color":"#777"});
  $(this).css({"z-index" : 23,"opacity":"0.8"});
  $(this).addClass("borrad7");
  $(".a1").css({"color":"#fff"});
  $(".a2").css({"color":"#fff"});
  $(this).animate({ 
        height : "200",
        width : "300",
        left : "-=45",
        top : "-=36"

}, 200,function(){
$(this).removeClass(“borrad7”);
$(this).addClass(“borrad5”);
});

},function(){

    $(".a1").css({"color":"#629532"});
    $(".a2").css({"color":"#777"});
    $(this).removeClass("borrad5");
    $(this).addClass('borrad6');
    $(this).parent().prev('span').removeClass('borrad8'); 
    $(this).children().children().css({"width":"224px", "height":"138px"});

$(this).css({
height : “138px”,
width : “224px”,
left : “0px”,
top : “0px”,“z-index” : 0,“opacity”:“1”
});
$(this).removeClass(“borrad6”);
$(".spankjiu").fadeOut(‘fast’);
$(this).parent().prev(‘span’).addClass(“spankjiu”);
$(".spankjiu1").css({“color”:"#fff"});

});
});

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