function popUp(url) {
	leftPos = 0
	topPos = 0
	if (screen) {
		leftPos = screen.width * .1
		popWidth = screen.width * .75
		topPos = screen.height * .1
		popHeight = screen.height * .75 }
	else {
		popWidth = 700
		popHeight = 400
	}
	popWindow = window.open(url,'popupWin','width='+popWidth+',height='+popHeight+',left='+leftPos+',top='+topPos+',toolbar=no,locaton-no,scrollbars=yes resizable=yes')
	popWindow.focus()
}

function pop_up_window(sTarget,sTitle,sWidth,sHeight) {
	winStats='toolbar=no,location=no,directories=no,menubar=no,'
	winStats+='scrollbars=yes,width=' + sWidth + ',height=' + sHeight + ',resizable=yes'
	wPopUp = window.open(sTarget, "Neverland", winStats);
	wPopUp.focus()
}

function validate_email(str) {
	l = str.length;
	at=str.indexOf("@");
	lastdot = str.lastIndexOf(".");
	if (at < 1 || (lastdot > l-3) || (lastdot-at < 2)) 
	return false;
}