function openNewWindow(URLtoOpen, windowName, windowFeatures) { 
  newWindow=window.open(URLtoOpen, windowName, windowFeatures);
}

function paypal() {
	openNewWindow('https://www.paypal.com/en/cgi-bin/webscr?cmd=xpt/cps/popup/OLCWhatIsPayPal-outside','paypal','height=500,width=470,toolbar=no,scrollbars=yes'); 
}

function help() {
	openNewWindow('help.php','help','height=500,width=450,toolbar=no,scrollbars=yes'); 
}

function about() {
	openNewWindow('about.php','about','height=380,width=450,toolbar=no,scrollbars=yes'); 
}

function tos() {
	openNewWindow('tos.php','tos','height=500,width=450,toolbar=no,scrollbars=yes'); 
}