The value of the property 'LoadPage' is null or undefined, not a Function object

If you've used the tag. Internet Explorer versions below 9 will display the error:

"The value of the property 'LoadPage' is null or undefined, not a Function object"

Do not use the body onLoad. This tag is not compatible on older browsers.

The solution is to use this instead:

if ( window.addEventListener ) {

window.addEventListener( "load", LoadPage, false );

}

else

if ( window.attachEvent ) {

window.attachEvent( "onload", LoadPage );

} else

if ( window.onLoad ) {

window.onload = LoadPage;

}