function popUp(URL) {leftVal = Math.abs(600 - screen.width) / 2;
topVal = Math.abs(480 - screen.height) / 2;
day = new Date();
id = day.getTime();
eval("page" + id + " = window.open(URL, '" + id + "', 'toolbar=0,scrollbars=1,location=0,statusbar=0,menubar=0,resizable=0,width=600,height=480,left="+leftVal+",top="+topVal+"');");
}

function popUp2(URL) {leftVal = Math.abs(600 - screen.width) / 2;
topVal = Math.abs(200 - screen.height) / 2;
day = new Date();
id = day.getTime();
eval("page" + id + " = window.open(URL, '" + id + "', 'toolbar=0,scrollbars=1,location=0,statusbar=0,menubar=0,resizable=0,width=600,height=200,left="+leftVal+",top="+topVal+"');");
}