function openPopUp(width,height,url,target)
{
 window.open(url,target,'toolbar=0,location=0, directories=0, status=0, menubar=0, scrollbars=1, resizable=1, width=' + width + ', height=' + height + ', left=' + (screen.width - width)/2 + ', top=' + (screen.height-height)/2 );
}
function openWin(width,height,url,target){
 window.open(url,target,'toolbar=0,location=0, directories=0, status=0, menubar=0, scrollbars=0, resizable=1, width=' + width + ', height=' + height + ', left=' + (screen.width - width)/2 + ', top=' + (screen.height-height)/2 );
}