function checkall(objForm){
	len = objForm.elements.length;
	var i=0;
	for( i=0 ; i<len ; i++) {
		if (objForm.elements[i].type=='checkbox') {
			objForm.elements[i].checked=objForm.check_all.checked;
		}
	}
}

function confirm_submit(objForm) {
	return true;
}

function fnNum(e)
	{  
		if(e.shiftKey || (e.keyCode < 48 || e.keyCode > 57) && (e.keyCode < 96 || e.keyCode > 105) && e.keyCode != 8 && e.keyCode != 9)    
		return false;
	}