function show_tab(num) {
var i;

for (i = 1; i <= 3; i++) {
document.getElementById("opt"+i).className = (num == i) ? "tab-on":"";
document.getElementById("t" + i + "c").style.display = 
(num == i) ? "block" : "none"
}
}

function vidpop(url)
{
	newwindow=window.open(url,'name','width=940,height=700,');
	if (window.focus) {newwindow.focus()}
}

function biopop(url)
{
	newwindow=window.open(url,'name','width=780,height=440, scrollbars=yes,');
	if (window.focus) {newwindow.focus()}
}

function socialpop(url)
{
	newwindow=window.open(url,'name','width=540,height=440, scrollbars=yes,');
	if (window.focus) {newwindow.focus()}
}