function checkboxOnchange(chb)
 {
	uicId = chb.id;
	firstColonIndex = uicId.indexOf(':');
	secondColonIndex = uicId.indexOf(':', firstColonIndex+1);
	formId = uicId.substr(0, firstColonIndex);
	tableId = uicId.substr(firstColonIndex+1, secondColonIndex-firstColonIndex-1);
	countId = formId+':selectedItemCount_'+tableId;
	if(document.getElementById(countId))
	{
		if (chb.checked)
			document.getElementById(countId).innerHTML=1+parseInt(document.getElementById(countId).innerHTML);
		else
			document.getElementById(countId).innerHTML=-1+parseInt(document.getElementById(countId).innerHTML);
    }
 }