46 lines
1.4 KiB
JavaScript
46 lines
1.4 KiB
JavaScript
// xWidth, Copyright 2001-2005 Michael Foster (Cross-Browser.com)
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// Part of X, a Cross-Browser Javascript Library, Distributed under the terms of the GNU LGPL
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function xWidth(e,w)
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{
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if(!(e=xGetElementById(e))) return 0;
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if (xNum(w)) {
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if (w<0) w = 0;
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else w=Math.round(w);
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}
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else w=-1;
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var css=xDef(e.style);
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if (e == document || e.tagName.toLowerCase() == 'html' || e.tagName.toLowerCase() == 'body') {
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w = xClientWidth();
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}
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else if(css && xDef(e.offsetWidth) && xStr(e.style.width)) {
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if(w>=0) {
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var pl=0,pr=0,bl=0,br=0;
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if (document.compatMode=='CSS1Compat') {
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var gcs = xGetComputedStyle;
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pl=gcs(e,'padding-left',1);
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if (pl !== null) {
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pr=gcs(e,'padding-right',1);
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bl=gcs(e,'border-left-width',1);
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br=gcs(e,'border-right-width',1);
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}
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// Should we try this as a last resort?
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// At this point getComputedStyle and currentStyle do not exist.
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else if(xDef(e.offsetWidth,e.style.width)){
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e.style.width=w+'px';
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pl=e.offsetWidth-w;
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}
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}
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w-=(pl+pr+bl+br);
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if(isNaN(w)||w<0) return;
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else e.style.width=w+'px';
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}
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w=e.offsetWidth;
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}
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else if(css && xDef(e.style.pixelWidth)) {
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if(w>=0) e.style.pixelWidth=w;
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w=e.style.pixelWidth;
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}
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return w;
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}
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