$.fn.onlyNumber=function(settings)
{
var defaults={
except:"-.A"
},
settings=$.extend({},defaults,settings||{}),
except=[];
for(var i=0;i<settings.except.length;i++)
{
except.push(settings.except.charCodeAt(i));
}
return this.each(function()
{
$(this).keypress(function(e)
{
if(e.which!=8&&e.which!=0&&(e.which<48||e.which>57)&&$.inArray(e.which,except)==-1)
return false;
});
});
}