var Adres = "http://www.sinaptik.net/widgets/FirmJobList.aspx";
var Parametre = "?";
Parametre = Parametre + "f=" + f + "&w=" + w + "&h=" + h + "&c=" + c + "&s=" + s;

var TamYol = Adres + Parametre;

var frm = "<iframe src='" + TamYol + "' width='"+ w +"' height='"+ h +"' frameborder='0' scrolling='no'></iframe>";
document.write(frm);