47 lines
1.4 KiB
JavaScript
Executable file
47 lines
1.4 KiB
JavaScript
Executable file
// ************************
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// layer utility routines *
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// ************************
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function getStyleObject(objectId) {
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// cross-browser function to get an object's style object given its id
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if(document.getElementById && document.getElementById(objectId)) {
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// W3C DOM
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return document.getElementById(objectId).style;
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} else if (document.all && document.all(objectId)) {
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// MSIE 4 DOM
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return document.all(objectId).style;
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} else if (document.layers && document.layers[objectId]) {
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// NN 4 DOM.. note: this won't find nested layers
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return document.layers[objectId];
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} else {
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return false;
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}
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} // getStyleObject
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function changeObjectVisibility(objectId, newVisibility) {
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// get a reference to the cross-browser style object and make sure the object exists
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var styleObject = getStyleObject(objectId);
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if(styleObject) {
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styleObject.visibility = newVisibility;
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return true;
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} else {
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// we couldn't find the object, so we can't change its visibility
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return false;
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}
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} // changeObjectVisibility
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function moveObject(objectId, newXCoordinate, newYCoordinate) {
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// get a reference to the cross-browser style object and make sure the object exists
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var styleObject = getStyleObject(objectId);
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if(styleObject) {
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styleObject.left = newXCoordinate;
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styleObject.top = newYCoordinate;
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return true;
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} else {
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// we couldn't find the object, so we can't very well move it
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return false;
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}
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} // moveObject
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