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