// Content Switch

function switch1(div)
{
if (document.getElementById('resPort1'))
{
var option=['resPort1','resPort2','resPort3','resPort4','resPort5','resPort6','resPort7','resPort8'];
for(var i=0; i<option.length; i++) 
{ obj=document.getElementById(option[i]);
obj.style.display=(option[i]==div)? "block" : "none"; }
}
}