function increase(sWhat) {
	var oObj=document.getElementById(sWhat);
	if(oObj) {
		var iCurrent=parseInt(oObj.value);
		if(isNaN(iCurrent)||(iCurrent<1))
			iCurrent=1;
		else
			iCurrent++;
		oObj.value=iCurrent;
	}
	return false;
}
function decrease(sWhat) {
	var oObj=document.getElementById(sWhat);
	if(oObj) {
		var iCurrent=parseInt(oObj.value);
		if(isNaN(iCurrent)||(iCurrent<=1))
			iCurrent=1;
		else
			iCurrent--;
		oObj.value=iCurrent;
	}
	return false;
}