This example only works on Internet Explorer. <html> <head> <title>IE Range Example</title> <script type="text/javascript"> function useRanges() { var oRange1 = document.body.createTextRange(); var oRange2 = document.body.createTextRange(); oRange1.findText("Hello World"); oRange2.findText("Hello"); alert("oRange1.isEqual(oRange2): " + oRange1.isEqual(oRange2)); alert("oRange1.inRange(oRange2): " + oRange1.inRange(oRange2)); } </script> </head> <body><p id="p1"><b>Hello</b> World</p> <input type="button" value="Use Ranges" onclick="useRanges()" />