/*
JavaScript Bible, Fourth Edition
by Danny Goodman
John Wiley & Sons CopyRight 2001
*/
Error Dialog Control
// function with invalid variable value
function goWrong() {
var x = fred
}
// turn off error dialogs
function errOff() {
window.onerror = doNothing
}
// turn on error dialogs with hard reload
function errOn() {
window.onerror = handleError
}
// assign default error handler
window.onerror = handleError
// error handler when errors are turned off...prevents error dialog
function doNothing() {return true}
function handleError(msg, URL, lineNum) {
var errWind = window.open("","errors","HEIGHT=270,WIDTH=400")
var wintxt = ""
wintxt += "An error has occurred on this page. "
wintxt += "Please report it to Tech Support."
wintxt += "
wintxt += ""
wintxt += "Error: " + msg + "\n"
wintxt += "URL: " + URL + "\n"
wintxt += "Line: " + lineNum + "\n"
wintxt += "Client: " + navigator.userAgent + "\n"
wintxt += "-----------------------------------------\n"
wintxt += "Please describe what you were doing when the error occurred:"
wintxt += ""
wintxt += ""
wintxt += ""
wintxt += ""
errWind.document.write(wintxt)
errWind.document.close()
return true
}