function DocumentLoad() {
	document.body.oncontextmenu = ContextShow; // add Event Handler for mouse right click
}

function ContextShow(event) {
	var SenderTagName = window.event != undefined ? window.event.srcElement.tagName : event.target.tagName;

	return SenderTagName == "INPUT" || SenderTagName == "TEXTAREA" || SenderTagName == "SELECT";	// retur true if right click was on an textfield
}