function select_all(chkName,frmName){
	var frm=document.forms[frmName];
	for(var i=0;i<frm.elements.length;i++){
		var e =frm.elements[i];
		if ((e.name != 'check_all') && (e.type=='checkbox')){
			e.checked =frm.check_all.checked;
		}
	}
}

function trim(str){
	str = str.replace(/^\s*|\s*$/g,"");
	return str;
}

function setImgSizeWH(theURL,sImage,imgW,imgH){
	var imgObj;
	imgObj = new Image();
	imgObj.src = theURL;
	if ((imgObj.width != 0) && (imgObj.height != 0)) {
		if(imgObj.width>imgW || imgObj.height>imgH){
			var iHeight = imgObj.height*imgW/imgObj.width;
			if(iHeight<=imgH){
				sImage.width=imgW;
				sImage.height=iHeight;
			}else{
				var iWidth=imgObj.width*imgH/imgObj.height;
				sImage.width=iWidth;
				sImage.height=imgH;
			}
		}else{
			sImage.width=imgObj.width;
			sImage.height=imgObj.height;
		}
	}else{
		sImage.width = imgW;
		sImage.height= imgH;
	}
}

function get_cookie(Name){
	var Name = Name + "=";
	var ca = document.cookie.split(';');
	for(var i=0;i < ca.length;i++){
		var c = ca[i];
		while (c.charAt(0)==' ') c = c.substring(1,c.length);
		if (c.indexOf(Name) == 0) return unescape(c.substring(Name.length,c.length));
	}
	return "";
}

function set_cookie( name, value, expires, path, domain, secure ){
	var today = new Date();
	today.setTime( today.getTime() );
	if ( expires ){
		expires = expires * 1000 * 60 * 60 * 24;
	}
	var expires_date = new Date( today.getTime() + (expires) );
	document.cookie = name + "=" +escape( value ) +
	( ( expires ) ? ";expires=" + expires_date.toGMTString() : "" ) + 
	( ( path ) ? ";path=" + path : ";path=/" ) + 
	( ( domain ) ? ";domain=" + domain : "" ) +
	( ( secure ) ? ";secure" : "" );
}



function AddFavorite(sURL,sTitle){
    try{
        window.external.addFavorite(sURL,sTitle);
    }catch (e){
        try{
            window.sidebar.addPanel(sTitle,sURL,"");
        }catch (e){
           
        }
    }
}

function SetHome(obj,vrl){
	try{
		obj.style.behavior="url(#default#homepage)";
		obj.setHomePage(vrl);
	}catch(e){
		if(window.netscape){
			try {
				netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect");
			}catch(e){
				
			}
		}
	}
}

var HomepageFavorite = {
    //设为首页
    Homepage: function () {
        if (document.all) {
            document.body.style.behavior = 'url(#default#homepage)';
            document.body.setHomePage(window.location.href);

        }
        else if (window.sidebar) {
            if (window.netscape) {
                try {
                    netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect");
                }
                catch (e) {
                    alert("该操作被浏览器拒绝，如果想启用该功能，请在地址栏内输入 about:config,然后将项 signed.applets.codebase_principal_support 值该为true");
                    history.go(-1);
                }
            }
            var prefs = Components.classes['@mozilla.org/preferences-service;1'].getService(Components.interfaces.nsIPrefBranch);
            prefs.setCharPref('browser.startup.homepage', window.location.href);
        }
    }
    ,

    //加入收藏
    Favorite: function Favorite(sURL, sTitle) {
        try {
            window.external.addFavorite(sURL, sTitle);
        }
        catch (e) {
            try {
                window.sidebar.addPanel(sTitle, sURL, "");
            }
            catch (e) {
                alert("加入收藏失败,请手动添加.");
            }
        }
    }
}