function showMenu(field) {
  document.getElementById(field).style.visibility = "visible";
  //ShowSelectBox();
}
function hideMenu(field) {
  document.getElementById(field).style.visibility = "hidden";
  //HideSelectBox();
}


function getWidth() {

	cw = mainTabid0.cells(1).clientWidth;
	ch = mainTabid0.cells(1).clientHeight;
	tableHeight = mainTabid0.clientHeight;
	radHoyde = mainTabid0.rows(1).clientHeight;
	
	
	alert('cw:' + cw);
	alert('ch:' + ch);
	alert('tableHeight:' + tableHeight);
	alert('radHoyde:' + radHoyde);
}