function ID(id) {
  return document.getElementById(id);
}


function getElementHeight(elem) {
	xPos = elem.offsetHeight;
	return xPos;
} 

function getElementWidth(elem) {
  xPos = elem.offsetWidth;

	return xPos;
}


function qtyFocus(elem) {
  if(parseInt(elem.value)==0)
    elem.value='';
  else
    elem.select();
}
function qtyBlur(elem) {
  if(elem.value=='')
    elem.value=0;
}