jQuery(function($){dateShow();});

function dateShow(){
var dc = $("input").filter(".dateRange");
//alert(dc[0]);
if(dc.length==2){
$('.dateRange').datepicker({showOn: 'both', buttonImageOnly: true, buttonImage: '../Controls/DateControl/calendar.gif', buttonText: 'Calendar', beforeShow: customRange}); 
}
else{
$('.dateRange').datepicker({showOn: 'both', buttonImageOnly: true, buttonImage: '../Controls/DateControl/calendar.gif', buttonText: 'Calendar'}); 
}
function customRange(input) { 
    return {minDate: (dc[1] ? $(dc[0]).datepicker('getDate') : null), 
        maxDate: (dc[0] ? $(dc[1]).datepicker('getDate') : null)}; 
}
}
//Sys.Application.add_load(dateShow);