jquery date picker target

Question

hi every one . on my page there is two input field 1. startDate 2. endDate i have a jquery script to pick date which is called on window onload.that script works on only one input field but i want on both

script on same page is:-

window.onload = function(){
         new JsDatePick({
        useMode:2,
        target:"startDate",
        dateFormat:"%j/%n/%Y",
        isStripped:false,

        yearsRange: new Array(1971,2100),
        limitToToday:false,
    });

    };

in this i have to set target for these two field or call it two times on window.onload how?