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POUsing mouse coordinates as pixel values for javascript functions
 

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  1. POUsing mouse coordinates as pixel values for javascript functions
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    <p>Is there any way to input mouse click coordinates as the amount by which to change an element property as in the following sort of function? Specifically is there a way to use the Y coordinate of the mouse click as the pixel amount for the height instead of a fixed pixel number?</p> <pre><code>function changeObject() { document.getElementById('object').style.height = '500px'; } </code></pre> <p>Edit:</p> <p>Use cookies to remember former height</p> <pre><code>&lt;script type="text/javascript"&gt; function setCookie (name, value, expires, path, domain, secure) { document.cookie = name + "=" + escape(value) + ((expires) ? "; expires=" + expires : "") + ((path) ? "; path=" + path : "") + ((domain) ? "; domain=" + domain : "") + ((secure) ? "; secure" : ""); } function getCookie (name) { var cookie = " " + document.cookie; var search = " " + name + "="; var setStr = null; var offset = 0; var end = 0; if (cookie.length &gt; 0) { offset = cookie.indexOf(search); if (offset != -1) { offset += search.length; end = cookie.indexOf(";", offset); if (end == -1) { end = cookie.length; } setStr = unescape(cookie.substring(offset, end)); } } if (setStr == 'false') { setStr = false; } if (setStr == 'true') { setStr = true; } if (setStr == 'null') { setStr = null; } return(setStr); } document.getElementById('bookmarktag').onclick = function(event){ var clickX = event.clientX + document.body.scrollLeft; var clickY = event.clientY + document.body.scrollTop; document.getElementById('bookmark').style.height = clickY + 'px'; document.getElementById('bookmark2').style.marginTop = clickY + 'px'; document.getElementById('bookmarkdiv2').style.display = 'block'; document.getElementById('bookmarkdiv').style.display = 'none'; setCookie('bookmark_state', true); } function checkBookmark() { if (getCookie('bookmark_state') == null) { document.getElementById('bookmarkdiv').style.display = 'block'; } if (getCookie('bookmark_state') == true) { document.getElementById('bookmark').style.height = clickY + 'px'; document.getElementById('bookmark2').style.marginTop = clickY + 'px'; document.getElementById('bookmarkdiv2').style.display = 'block'; document.getElementById('bookmarkdiv').style.display = 'none'; } } &lt;/script&gt; </code></pre>
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    1. COdo you need the mouse relative to the window, or the top of the document?
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    2. COThe top of the document
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