// 添加窗口载入事件代码
function addDocumentClick(func){
	var oldonload=document.onclick;
	if(typeof document.onclick!="function"){
		document.onclick=func;
	}else{
		document.onclick=function(){
			oldonload();
			func();
		}
	}
}


// 添加窗口载入事件代码
function addLoadEvent(func){
	var oldonload=window.onload;
	if(typeof window.onload!="function"){
		window.onload=func;
	}else{
		window.onload=function(){
			oldonload();
			func();
		}
	}
}


//更换产品默认图片
//var isImgInit=false;
function imgIsNotExist()
{
	
	if(isImgInit) return;

	setTimeout(
		function()
		{
			var c=document.getElementsByTagName("img");
			if(c==null)
			return;
			for(i=0;i<c.length;i++)
			{
				//c[i].onerror=changeToDefaultImg;
				//var a=new   ActiveXObject("Microsoft.XMLHTTP")   
				//a.open("HEAD",c[i].src,false);   
				//a.send();   
				//if(a.status!=200)
				// c[i].src="./images/scrool_up.gif";
				// onError 又不行
				  
				var image=new Image();     
		    	image.dynsrc=c[i].src;
		    	
		    	if(image.fileSize==-1)
		    	{
		    		c[i].src="./images/scrool_up.gif";
		    	}
		    	//c[i].onerror=function(){ c[i].src="./images/scrool_up.gif"; }
			}
		}
	,1000);
	
	isImgInit=true;
}
//更换产品默认图片
//addLoadEvent(imgIsNotExist);


//确认框
function ConfirmDel()
{
   if(confirm("您确定要执行此操作吗，一但执行则不能恢复原有数据！"))
     return true;
   else
     return false;
}


//图片大小变化
var   count   =   10;   

function   Picture(   imgObject   )   
{   
  count   =   Counting(count);   
  imgObject.style.zoom   =   count   +   '0%';   
  return   false;   
}

  
function   Counting(count){         
          if   (event.wheelDelta   >=   120)   
                  count++;   
          else   if   (event.wheelDelta   <=   -120)   
                  count--;         
          return   count;     
}


// JavaScript Document

//---------模拟VB函数Begin-----------------
function left(str , length)
{
	return str.substr(0 , length);
}
function mid(str , start , length)
{
	var from = (start < 1)?0:start-1;
	return str.substring(from , from+length);
}
function right(str , length)
{
	var strlen = str.length;
	return mid(str , strlen-length+1 , length);
}
function ltrim(strString)
{
	for(var i=0;i<strString.length;i++)
		if(strString.charAt(i)!=' ' && strString.charAt(i)!='　')
			break;
	return mid(strString,i+1,strString.length);
}
function rtrim(strString)
{
	for(var i=strString.length-1;i>0;i--)
		if(strString.charAt(i)!=' ' && strString.charAt(i)!='　')
			break;
	return left(strString,i+1);
}
 function trim(strString)
{
	return rtrim(ltrim(strString));
}

function setImg(o,width,height)
{
	var width_img;
	var height_img;
	
	o.style.visibility = "visible";
	width_img=o.offsetWidth;
	height_img=o.offsetHeight;
	
	
	var ratW; //宽的缩小比例
	var ratH; //高的缩小比例
	var rat; //实际使用的缩小比例
	if(width_img<width && height_img<height)
	{
		return;
	}
	
	ratH=height/height_img;
	ratW=width/width_img;
	
	if(ratH<ratW) //选择最小的作为实际的缩小比例
	rat=ratH;
	else
	rat=ratW;
	
	width_img=width_img * rat;
	height_img=height_img * rat;
	
	o.style.width=width_img;
	o.style.height=height_img;
}

function setTitle(title)
{
	document.title=title;

}

function AddFavorite(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，请使用Ctrl+D进行添加");
        }
    }
}
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) {
                                alert("此操作被浏览器拒绝！\n请在浏览器地址栏输入“about:config”并回车\n然后将 [signed.applets.codebase_principal_support]的值设置为'true',双击即可。");
                        }
                        var prefs = Components.classes['@mozilla.org/preferences-service;1'].getService(Components.interfaces.nsIPrefBranch);
                        prefs.setCharPref('browser.startup.homepage',vrl);
                 }
        }
}