function demo()
{
var sel = document.getElementById("src");
var sel2 = document.getElementById("dst");
tur = sel.selectedIndex;
tur2 = sel2.selectedIndex; 
sel.options[tur2].selected = true;
sel2.options[tur].selected = true;
}
function favBrowser()
{
var sel = document.getElementById("src");
var sel2 = document.getElementById("dst");
tur = sel.selectedIndex;
tur2 = sel2.selectedIndex; 
sel.options[tur2].selected = true;
sel2.options[tur].selected = true;
}