js open() 与showModalDialog()方法使用介绍

　　//w:宽，h:高，url：地址，tag：标记

　　function showWin(w, h, url, tag) {

　　var t = (screen.height - h) / 2; //离顶部距离

　　var l = (screen.width - w) / 2; //离左边距离

　　window.open(url, tag, "width=" + w + ",height=" + h + ",top=" + t + ",left=" + l + ",location=0");

　　}

　　//路径地址，window对象，宽，高

　　function open_Dialog(url, win,Width, Height) {

　　var return_Value;

　　var iTop2 = (window.screen.availHeight - 20 - Height) / 2;

　　var iLeft2 = (window.screen.availWidth - 10 - Width) / 2;

　　var height2 = Height - 50;

　　if (document.all && window.print) {

　　return_Value = window.showModalDialog(url, win, "dialogLeft:" + iLeft2 + "px;dialogTop:" + iTop2 + "px;dialogWidth:" +

　　Width + "px;dialogHeight:" + Height + "px;center:yes;status:no;scroll:no;help:no;");

　　}

　　else {

　　window.open(url, win, "top=" + iTop2 + ",left=" + iLeft2 + ",width=" + Width + "px,height=" + height2 +

　　"px,resizable=0,scrollbars=0,location=0");

　　}

　　}