var old2calcst1 = "";
var old2calcst2 = "";
var imp;
var imp2;
var imp3;
function start2Calc() {
    imp = document.getElementById("ctl00_ContentPlaceHolder1_kalkulator1_TextBox1_CenaNieruch");
    imp2 = document.getElementById("ctl00_ContentPlaceHolder1_kalkulator1_TextBox1_proc");
    imp3 = document.getElementById("ctl00_ContentPlaceHolder1_kalkulator1_ImageButton1");
    if (imp) {
        imp.onchange = zmiana2Calc;
        imp.onkeyup = zmiana2Calc;
        imp2.onchange = zmiana2Calc;
        imp2.onkeyup = zmiana2Calc;
        old2calcst1 = imp.value;
        old2calcst2 = imp2.value;
        imp3.style.border = "0px solid red";
        imp3.style.margin = "2px"
    }
}

function zmiana2Calc() {
    if ((imp.value != old2calcst1) || (imp2.value != old2calcst2)) {
        imp3.style.border = "2px solid red";
        imp3.style.margin = "0px"
    }
    else {
        imp3.style.border = "0px solid red";
        imp3.style.margin = "2px"
    }
}