function isvalidemail(value)
	{
	var atsignindex = value.indexOf("@");	
	if (atsignindex == -1)
		{ return false; }

	var dotsomething = value.lastIndexOf(".");
	if (dotsomething == -1 || dotsomething < atsignindex)
		{ return false; }

	return true;

	}


function numeric_only(data)
 {
  if(data.search(/[^0-9]/)  !=  -1)
  { return false; }
  return true;
  }


function setColor(el, bg)
  {  if(el.style)  el.style.backgroundColor = bg;  }