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function SplitScreen (nonScrollingRegionId, scrollingRegionId) {
// store references to the two regions
this.nonScrollingRegion = document.getElementById(nonScrollingRegionId);
this.scrollingRegion = document.getElementById(scrollingRegionId);
// set the scrolling settings
document.body.style.margin = "0px";
document.body.style.overflow = "hidden";
this.scrollingRegion.style.overflow = "auto";
// fix the size of the scrolling region
this.resize(null);
// add an event handler to resize the scrolling region when the window is resized
registerEventHandler(window, 'resize', getInstanceDelegate(this, "resize"));
}
SplitScreen.prototype.resize = function(e) {
var height = document.body.clientHeight - this.nonScrollingRegion.offsetHeight;
if (height > 0) {
this.scrollingRegion.style.height = height;
} else {
this.scrollingRegion.style.height = 0;
}
this.scrollingRegion.style.width = document.body.clientWidth;
}
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