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POhow to pre-load images from a link in php or jquery
 

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  1. POhow to pre-load images from a link in php or jquery
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    <p>i have searched feverishly for a solution to my gallery, which doesnt apply the centering function to the image as i click it's respective thumbnail. instead i have to click the thumbnail at least twice for the large image to pop up in the center of the page. the gallery is a jquery/php. i have dynamically loaded my thumbnails using php and link them to the respective large image with the same name using php. I am wondering preloading the large image would help this problem if so how can i preload them seeing as though its an entire directory which has alot of pictures, hence why i didnt manually load them. the script is below:</p> <pre><code>&lt;?php error_reporting(0); /* function: returns files from dir */ function get_files($images_dir,$exts = array('jpeg','gif','png','jpg')) { $files = array(); if($handle = opendir($images_dir)) { while(false !== ($file = readdir($handle))) { $extension = strtolower(get_file_extension($file)); if($extension &amp;&amp; in_array($extension,$exts)) { $files[] = $file; } } closedir($handle); } return $files; } /* function: returns a file's extension */ function get_file_extension($file_name) { return substr(strrchr($file_name,'.'),1); } $images_dir = 'hftpnyc/thumbs/'; $thumbs_dir = 'hftpnyc/thumbs/thumbnails/'; $thumbs_width = 100; $images_per_row = 11; $string = ""; /** generate photo gallery **/ $image_files = get_files($images_dir); if(count($image_files)) { $index = 0; foreach($image_files as $index=&gt;$file) { $index++; $thumbnail_image = $thumbs_dir.$file; //if(!file_exists($thumbnail_image)) { //$extension = get_file_extension($thumbnail_image); //if($extension) { //make_thumb($images_dir.$file,$thumbnail_image,$thumbs_width); //} //} error_reporting(0); echo '&lt;div class="smllpic" style=" padding: 0px; margin: 0px; border: 1px solid black; display: block; width: 100px; height:100px; float: left; "&gt;&lt;a href="'.$images_dir.$file.'" rel="lrgimg" class="lightbox"&gt; &lt;img id="thumbs" src="',$thumbnail_image,'" width="100px"/&gt;&lt;/a&gt;&lt;/div&gt;'; if($index % $images_per_row == 0) { echo '&lt;div class="clear"&gt;&lt;/div&gt;'; } } } else { echo '&lt;p&gt;There are no images in this gallery.&lt;/p&gt;'; } ?&gt; &lt;script type="text/javascript"&gt; $(document).ready(function(){ $('.smllpic img').hover(function () { var $this = $(this); $this.stop().animate({'opacity':'1.0'},200); },function () { var $this = $(this); $this.stop().animate({'opacity':'0.7'},200); }); function centreit(){ //get the height and width of the modal var modal_height = $('.box').height(); var modal_width = $('.box').width(); //get the height and width of the page var window_width = $(window).width(); var window_height = $(window).height(); //calculate top and left offset needed for centering var topp = (window_height - modal_height)/2; var left = (window_width - modal_width)/2; //apply new top and left css values $('.box').css({'top' : topp+'px' , 'left' : left+'px', 'right': left+'px','bottom':topp+'px'}); $('.motown').css({'top' : topp+'px' , 'left' : left+'px', 'right': left+'px','bottom':topp+'px'}); }; $('.lightbox').click(function(e) { e.preventDefault(); // keeps new page from loading var thisPicture = $(this).attr('href'); // path to full sized picture, function getit(){ $('body').append('&lt;div class="backdrop" label="click to close"&gt;&lt;/div&gt;&lt;div class="box" id="centre" &gt;&lt;div class="close"&gt;x&lt;/div&gt;&lt;div style="cursor:pointer; opacity:1;font-family:Agency FB;margin-top:50%; right:-20px;position:fixed;color:white;font-size:50px; z-index:50;-webkit-border-radius: 5px;-moz-border-radius: 5px;border-radius: 5px;-moz-box-shadow:0px 0px 5px #444444;-webkit-box-shadow:0px 0px 5px #444444;box-shadow:0px 0px 5px #444444;"&gt;&gt;&lt;/div&gt;&lt;div style="cursor:pointer; opacity:.35;font-family:Agency FB;margin-top:50%; left:-20px; position:absolute; font-size:50px;color:white; z-index:70;-webkit-border-radius:5px;-moz-border-radius: 5px; border-radius:5px;-moz-box-shadow:0px 0px 5px #444444; -webkit-box-shadow:0px 0px 5px #444444; box-shadow:0px 0px 5px #444444;"&gt;&lt;&lt;/div&gt;&lt;img class="motown" src="'+thisPicture+'" style="max-height:705px;max-width:905px;" &gt;&lt;/div&gt;'); }; centreit(); $(window).resize(function(){ $('.box').resize(); $('.motown').resize(); centreit(); }); if ($('.smllpic').click()){ getit(); centreit(); $("html").css("overflow", "hidden"); $('.backdrop').fadeTo(500,0.9); $('.box').children().fadeIn(1000); }; //$('.backdrop').css({ 'display' : 'block', opacity : 0}); $('.close').click(function(){ close_box();}); $('.backdrop').click(function(){ close_box();}); function close_box(){ $('.backdrop').remove(); $('.box').remove(); $("html").css("overflow", "");}; });}); &lt;/script&gt; </code></pre>
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    1. COan alternative to preloading would be to give your client each image's size.
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      1. POhow to pre-load images from a link in php or jquery
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