Question

I have made script that center div on center of browser window, and my problem is here:

The script takes a width and height of overlay_window before it loads content, so it centres div like for 1px x 1px element, right after this it loads contents and I don`t know how to prevent this.

Can someone help me?

Here the code:

$(document).ready( function(){      
    $('.cod').click(function() {
        var div_name = $(this).attr('id');      
        $('.overlay_window').load('/templates/' + div_name + '_template.php');
        var div_width = $('#'+div_name+'-overlay').width();
        var div_height = $('#'+div_name+'-overlay').height();
        $('.overlay_window').css("width", ""+div_width+"px")
        $('.overlay_window').css("height", ""+div_height+"px")
        var div2_width = $('.overlay_window').width();
        var div2_height = $('.overlay_window').height();
        var window_width = $(window).width();
        var window_height = $(window).height();         
        var widthoffset = (window_width - div2_width) / 2;  
        var heightoffset = (window_height - div2_height) / 2;   
        $('.overlay_window').css("left", "" + (widthoffset-div_width) + "px");
        $('.overlay_window').css("top", "" + (heightoffset-div_height) + "px");
        $('.overlay_background').fadeIn();
        $('.overlay_window').fadeIn();  
    });
});

and CSS:

div.overlay_window{
    background:#ffffff;
    width:auto;
    height:auto;
    position:absolute;
    z-index:200;
    top:0;
    left:0;
}

Answer 1

Make your style changes when data is loaded from .load(url, completed) function. You simple asked to load page and while it loadings, you make your style changes.

$(document).ready( function(){    
    $('.cod').click(function() {
       var div_name = $(this).attr('id');
       $('.overlay_window').load('/templates/' + div_name + '_template.php'**, function(){
          var div_width = $('#'+div_name+'-overlay').width();
          var div_height = $('#'+div_name+'-overlay').height();
          $('.overlay_window').css("width", ""+div_width+"px")
          $('.overlay_window').css("height", ""+div_height+"px")
          var div2_width = $('.overlay_window').width();
          var div2_height = $('.overlay_window').height();
          var window_width = $(window).width();
          var window_height = $(window).height();
          var widthoffset = (window_width - div2_width) / 2;  
          var heightoffset = (window_height - div2_height) / 2;   
          $('.overlay_window').css("left", "" + (widthoffset-div_width) + "px");
          $('.overlay_window').css("top", "" + (heightoffset-div_height) + "px");
          $('.overlay_background, .overlay_window').fadeIn();
       });
    });
    });