var fjoldi = 0; var stafli = new Array(); function frumstillaStafla(){ fjoldi = 0; } function push(){ stafli[fjoldi] = document.all['stak'].value; document.all['stak'].value = ""; fjoldi++; birtaStafla(); } function pop(){ if (fjoldi > 0){ document.all['stak'].value = stafli[--fjoldi]; birtaStafla(); } else { parent.frames['nedri'].document.close(); parent.frames['nedri'].document.write("Staflinn er tómur!"); } } function birtaStafla(){ parent.frames['nedri'].document.close(); if (fjoldi == 0) {parent.frames['nedri'].document.write(" ");} for (i=0; i<fjoldi; i++){ parent.frames['nedri'].document.write(stafli[i], "<br>"); } }