function setButtonProperties(sButtonName, sIcon, sTextKey, sToolTipKey) {
		var oButton = this.getControl(sButtonName);
		var sText = sTextKey ? this.getTextResources().getText(sTextKey) : "";
		var sToolTip = sToolTipKey ? this.getTextResources().getText(sToolTipKey) : "";
		oButton.setText(sText || "");
		oButton.setTooltip(sToolTip || "");
		oButton.setIcon(sIcon || "");
	}
Events are fired when the Toolbar Buttons are pressed