SelectionStart and SelectionEnd Not working in Internet Expl

Question

function KeyDownHandler(e,elem) {

var event = window.event;

if (event === undefined) {

event = e;

}

var txtElement = elem.id;

var txtElementText = GetTextElementValue(elem.id);

 

var start = txthome.selectionStart;

var end = txthome.selectionEnd;

 

Internet Explorer is not able to retrieve start & end VALUES.

Where as other browsers are working.

Please share your answers friends.

Thank you.