// Content Switch

function switch1(div)
{
if (document.getElementById('commPort1'))
{
var option=['commPort1','commPort2','commPort3','commPort4','commPort5','commPort6','commPort7','commPort8','commPort9','commPort10','commPort11'];
for(var i=0; i<option.length; i++) 
{ obj=document.getElementById(option[i]);
obj.style.display=(option[i]==div)? "block" : "none"; }
}
}