html - CSS adding stretching edges next to banner -


im beginner sitebuilder :) want following: there 400x200 sized banner image, must put centered. width bigger, there must 2 edges left , right, preferably stretching, so:

s t r e t c h e d m g e banner s t r e t c h e d m g e  st re tc di ma ge banner st re tc di ma ge

the left , right images different... here comes trick. centered img width = 100%, must shrink when the width of browser (iphone) smaller 400px... , 2 edges must hidden!

now how this? tried add container div , set background-image - wont work, 2 edges different... ideas?

you can use html-canvas resize logo , side images

with canvas + javascript can respond resizing. can scale down side images eliminate them viewport goes below 400px.

for example, here banner when images fit full-sized.

enter image description here

here banner when side images must scaled down center remaining full-sized.

enter image description here

and here banner when sides removed , center must resized.

enter image description here

here code , fiddle: http://jsfiddle.net/m1erickson/jewba/

<!doctype html> <html lang="en"> <head>    <style>       body{ background-color: ivory; }       #wrapper{ position:relative; }       canvas{ position:absolute; left:40px; top:5px; border:1px solid red;}       #amount{ position:absolute; left:1px; top:5px; margin-bottom:15px; width:23px; border:0; color:#f6931f; font-weight:bold; }       #slider-vertical{ position:absolute; left:5px; top:40px; width:15px; height:225px; border:0px; color:#f6931f; font-weight:bold; }   </style>    <link rel="stylesheet" href="http://code.jquery.com/ui/1.10.3/themes/smoothness/jquery-ui.css" />   <script src="http://code.jquery.com/jquery-1.9.1.js"></script>   <script src="http://code.jquery.com/ui/1.10.3/jquery-ui.js"></script>    <script>    $(function() {      var canvas=document.getelementbyid("canvas");     var ctx=canvas.getcontext("2d");      $( "#slider-vertical" ).slider({       orientation: "vertical",       range: "min",       min: 150,       max: 800,       value: 800,       slide: function( event, ui ) {         $( "#amount" ).val( ui.value );         resizeanddraw();       }     });      $( "#amount" ).val( $( "#slider-vertical" ).slider( "value" ) );        var imgcount=0;       var left=new image();       left.onload=function(){ imgsloaded(); }       left.src="https://dl.dropboxusercontent.com/u/139992952/stackoverflow/facebook.png";       var center=new image();       center.onload=function(){ imgsloaded(); }       center.src="https://dl.dropboxusercontent.com/u/139992952/stackoverflow/logo.png";       var right=new image();       right.onload=function(){ imgsloaded(); }       right.src="https://dl.dropboxusercontent.com/u/139992952/stackoverflow/twitter.png";       function imgsloaded(){           if(++imgcount>=3){               resizeanddraw();           }       }        var offsety=10;        function resizeanddraw(){            var width=$("#amount").val();            canvas.width=width;            var centerwidth=(width>center.width)?center.width:width;           var centerheight=center.height*centerwidth/center.width;           var centerx=width/2-centerwidth/2;           var centery=offsety;            var sideswidth=(width-centerwidth)/2;            var leftwidth=(sideswidth>left.width)?left.width:sideswidth;           var leftheight=left.height*leftwidth/left.width;           var leftx=sideswidth/2-leftwidth/2;           var lefty=offsety+centerheight/2-leftheight/2;            var rightwidth=(sideswidth>right.width)?right.width:sideswidth;           var rightheight=right.height*rightwidth/right.width;           var rightx=(width/2+centerwidth/2)+(sideswidth/2-rightwidth/2);           var righty=offsety+centerheight/2-rightheight/2;            // center           ctx.drawimage(center,centerx,centery,centerwidth,centerheight);            if(width>400){               // left               ctx.drawimage(left,leftx,lefty,leftwidth,leftheight);               // right               ctx.drawimage(right,rightx,righty,rightwidth,rightheight);           }       }    });   // end $(function(){});    </script> </head> <body>     <div id="wrapper">         <input type="text" id="amount" />         <div id="slider-vertical"></div>         <canvas id="canvas" width=300 height=300></canvas>     </div> </body> </html>

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