function openWin(wUrl,wName,wWidth,wHeight){
scWidthCenter = screen.availWidth / 2;
scHeightCenter = screen.availHeight / 2;
wOption = "scrollbars=yes,width=" + wWidth + ",height=" + wHeight +
",Left=" + (scWidthCenter - (wWidth / 2))+",top=" + (scHeightCenter
-(wHeight / 2));
window.open(wUrl,wName,wOption).focus();
}