Drag and Drop without using cordinate system

You can use this function to drag an object to another object:

// JScript

// Drags the source object to the specified destination object
function DragToObject(source, destination)
{
  var point1 = source.WindowToScreen(source.Width/2, source.Height/2); 
  var point2 = destination.WindowToScreen(destination.Width/2, destination.Height/2);
  source.Drag(source.Width/2, source.Height/2, point2.X - point1.X, point2.Y - point1.Y);
}

Here's a demo for the http://html5demos.com/drag page:

function DragDropTest()
{
  var strUrl = "http://html5demos.com/drag";
  Browsers.Item(btIExplorer).Run(strUrl);
  var page = Sys.Browser().Page(strUrl);

  // Drag&drop "two" into the trash bin
  var item = page.FindChildByXPath("//a[@id='two']");
  var trash = page.FindChildByXPath("//div[@id='bin']");

  DragToObject(item, trash);
}