var popUpWin=0;

function pop(strURL) {
	var width = 640;
	var height = 450;
	if (popUpWin) {
	if(!popUpWin.closed) 
		popUpWin.close();
	}
	popUpWin = window.open(strURL, 'Emisoft','scrollbars=yes,status=yes,titlebar=no,toolbar=no,menubar=no,location=no,resizable=yes, width=' + width + ', height=' + height);
	return false;
}