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copied!<p>You could build it with CSS floats, e.g if the squares are 20x20px:</p> <pre><code><style type="text/css"> div.container { width: Xpx; /* 20px [square box width]+1px [border width of each square])) * number of squares */ height: Xpx; /* similar to above] */ border: solid black; border-width: 1px 0px 0px 1px;} /* North East South West */ div.square { float: left; width: 20px; height: 20px; border: solid black; border-width: 0px 1px 1px 0px;} div.row { clear: both;} </style> <div class="container"> <div class="row"> <div class="square"> </div> ... </div> ... </div> </code></pre> <p>Remember to use IE with a valid doctype <a href="http://htmlhelp.com/tools/validator/doctype.html" rel="nofollow noreferrer">http://htmlhelp.com/tools/validator/doctype.html</a> or to use box model hacks in quirks mode [<a href="http://tantek.com/CSS/Examples/boxmodelhack.html]" rel="nofollow noreferrer">http://tantek.com/CSS/Examples/boxmodelhack.html]</a>.</p> <p>You could probably make the above take up less if you use IDs instead of classes and use single letters in the CSS.</p> <p>What's <em>fastest</em> usually depends wildly on the browser though, e.g. I wouldn't be surprised if IE performs better with tables, while other browsers perform better with relative DIVs/floats.</p> <p>(I haven't tested the above, but something similar should work.)</p> <p>You could then convert the above to JavaScript to reduce page load times, e.g:</p> <pre><code>function GenHTML(NumRows, NumCols) { var LRows = [] for (var x=0; x<NumRows; x++) { var LCols = [] for (var y=0; y<NumCols; y++) { var HTML = '<div class="square"></div>' LCols.push(HTML)} LRows.push('<div class="row">'+ LCols.join('') +'</div>')} return LRows.join('')} function SetHTML(NumRows, NumCols) { document.getElementById('container').innerHTML = GenHTML(NumRows, NumCols)} </code></pre>

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