function validateCheckBoxes(form){

	//if detached checkbox is selected disable attached options
	if (form.detached.checked ==true ){
		
           form.attached.disabled=true;
           form.attachedOptions.disabled=true;
    
	}

	//if attached checkbox is selected disable detached options
	else if (form.attached.checked ==true ){
	   form.detached.disabled = true
           form.detachedType.disabled = true
           form.detachedStyle.disabled = true;
	}

	//else re-enable the selections when the user unchecks a box
	else {
	   form.attached.disabled=false;
           form.attachedOptions.disabled=false;
           form.detachedType.disabled=false;
           form.detached.disabled=false;
           form.detachedStyle.disabled=false;
	}
}