function numeric(event)
{
	var strUserAgent = navigator.userAgent.toLowerCase(); 
	var isIE = strUserAgent.indexOf("msie") > -1; 
	
	if(isIE)
	{
	
		if((event.keyCode>=48 && event.keyCode<=57) ||event.keyCode==0 ||event.keyCode==8)
			return true;
		else 
			return false;
	}
	else
	{
	
		if((event.which>=48 && event.which<=57) ||event.which==0 ||event.which==8)
			return true;
		else 
			return false;
	}
}