function CenterItem(theItem){
    var winWidth=$(window).width();
    var winHeight=$(window).height();
    var windowCenter=winWidth/2;
    var itemCenter=$(theItem).width()/2;
    var theCenter=windowCenter-itemCenter;
    var windowMiddle=winHeight/2;
    var itemMiddle=$(theItem).parent().height()/2;
    var theMiddle=windowMiddle-itemMiddle;
    if(winWidth>$(theItem).width()){ //horizontal
        $(theItem).css('left',theCenter);
    } else {
        $(theItem).css('left','0');
    }
    if(winHeight>$(theItem).height()){ //vertical
        $(theItem).css('margin-top',theMiddle);
    } else {
        $(theItem).css('margin-top','0');
    }
}
$(document).ready(function() {
    CenterItem('.splash_box');
});
$(window).resize(function() {
    CenterItem('.splash_box');
});