<!--

function openCenterWindow( url, winName, width, height, scroll) 

{

xposition=0; yposition=0;

if ((parseInt(navigator.appVersion) >= 4 ))

{

xposition = (screen.width - width) / 2;

yposition = (screen.height - height) / 2;

}

theproperty= "width=" + width + "," 

+ "height=" + height + "," 

+ "location=0," 

+ "menubar=0,"

+ "resizable=1,"

+ "scrollbars=" +scroll+ ","

+ "status=0," 

+ "titlebar=0,"

+ "toolbar=0,"

+ "hotkeys=0,"

+ "screenx=" + xposition + "," //仅适用于Netscape

+ "screeny=" + yposition + "," //仅适用于Netscape

+ "left=" + xposition + "," //IE

+ "top=" + yposition; //IE 

window.open( url,winName,theproperty );

}

//-->