From Rex Hansen and it works quite well:you can workaround this by removing the onmouseover event on one of the map divs. Here’s some sample code (with comments on the limitations) which inserts a block of JavaScript during page prerender. The functions are called when the page (body) finishes loading. If you need to package this with a task, I suspect you could probably override OnPreRender() in a custom task and stick this in there. protected void Page_PreRender(object sender, EventArgs e) { string scriptKeyCustom = "customChangeScript"; if (!ClientScript.IsStartupScriptRegistered(GetType(), scriptKeyCustom) && !Page.IsPostBack) { // Unset onmouseover events on the map so it does not receive focus. // As a result, keyboard shortcuts will not change cursor // (e.g. Shift will not change cursor to crosshair for a zoom-in operation - // first time in IE, permanent in Mozilla). string scriptBlock = @" function changeADFJS() { setTimeout(unsetFocus, 1000); } function unsetFocus(){ var jsmap = document.getElementById('MapControlDiv_{0}'); jsmap.onmouseover = null; if (isNav){ var mozmap = document.getElementById('MapMozillaLink_{0}'); mozmap.onmouseover = null; } } "; scriptBlock = scriptBlock.Replace("{0}", Map1.ClientID); ClientScript.RegisterClientScriptBlock(GetType(), scriptKeyCustom, scriptBlock, true); } string scriptKey = "loadScript"; if (!ClientScript.IsStartupScriptRegistered(GetType(), scriptKey) && !Page.IsPostBack) { // if Mozilla browser, use DOMContentLoaded event, else add to body onload string scriptBlock = @" if (document.addEventListener) { document.addEventListener(""DOMContentLoaded"", changeADFJS , false); } else { top.document.body.onload = changeADFJS; } "; ClientScript.RegisterClientScriptBlock(GetType(), scriptKey, scriptBlock, true); } }