main.js

再做嵌入式开发的时候

function init(){
	MM_preloadImages('http://www.fengbin.com/pic/main/homeover.gif',
	'http://www.fengbin.com/pic/main/javaover.gif',
	'http://www.fengbin.com/pic/main/toolover.jpg',
	'http://www.fengbin.com/pic/main/fileover.gif',
	'http://www.fengbin.com/pic/main/photoover.gif',
	'http://www.fengbin.com/pic/main/forumover.gif');
}

function MM_preloadImages() {
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_findObj(n, d) {
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_nbGroup(event, grpName)
{
  var i,img,nbArr,args=MM_nbGroup.arguments;
  if (event == "init" && args.length > 2)
  {
    if ((img = MM_findObj(args[2])) != null && !img.MM_init)
    {
      img.MM_init = true; img.MM_up = args[3]; img.MM_dn = img.src;
      if ((nbArr = document[grpName]) == null) nbArr = document[grpName] = new Array();
      nbArr[nbArr.length] = img;
      for (i=4; i < args.length-1; i+=2) if ((img = MM_findObj(args[i])) != null)
      {
        if (!img.MM_up) img.MM_up = img.src;
        img.src = img.MM_dn = args[i+1];
        nbArr[nbArr.length] = img;
      }
    }
  }
  else if (event == "over")
  {
    document.MM_nbOver = nbArr = new Array();
    for (i=1; i < args.length-1; i+=3) if ((img = MM_findObj(args[i])) != null)
    {
      if (!img.MM_up) img.MM_up = img.src;
      img.src = (img.MM_dn && args[i+2]) ? args[i+2] : args[i+1];
      nbArr[nbArr.length] = img;
    }
  }
  else if (event == "out" )
  {
    for (i=0; i < document.MM_nbOver.length; i++)
    {
      img = document.MM_nbOver[i]; img.src = (img.MM_dn) ? img.MM_dn : img.MM_up;
    }
  }
  else if (event == "down")
  {
    if ((nbArr = document[grpName]) != null)
      for (i=0; i < nbArr.length; i++) { img=nbArr[i]; img.src = img.MM_up; img.MM_dn = 0; }
    document[grpName] = nbArr = new Array();
    for (i=2; i < args.length-1; i+=2) if ((img = MM_findObj(args[i])) != null)
    {
      if (!img.MM_up) img.MM_up = img.src;
      img.src = img.MM_dn = args[i+1];
      nbArr[nbArr.length] = img;
    }
  }
}


// #############################################################################
// let's find out what DOM functions we can use
var vbDOMtype = '';
if (document.getElementById)
{
	vbDOMtype = "std";
}
else if (document.all)
{
	vbDOMtype = "ie4";
}
else if (document.layers)
{
	vbDOMtype = "ns4";
}

var vBobjects = new Array();

// #############################################################################
// function to emulate document.getElementById
function fetch_object(idname, forcefetch)
{
	if (forcefetch || typeof(vBobjects[idname]) == "undefined")
	{
		switch (vbDOMtype)
		{
			case "std":
			{
				vBobjects[idname] = document.getElementById(idname);
			}
			break;

			case "ie4":
			{
				vBobjects[idname] = document.all[idname];
			}
			break;

			case "ns4":
			{
				vBobjects[idname] = document.layers[idname];
			}
			break;
		}
	}
	return vBobjects[idname];
}

function toggle_group(group)
{
	var curdiv = fetch_object("group_" + group);

	if (curdiv.style.display == "none")
	{
		open_close_group(group, true);
	}
	else
	{
		open_close_group(group, false);
	}
}
function open_close_group(group, doOpen)
{
	var curdiv = fetch_object("group_" + group);
	var curbtn = fetch_object("button_" + group);

	if (doOpen)
	{
	curdiv.style.display = "";
		curbtn.src = "./pic/main/minus.gif";
		curbtn.title = "";
	}
	else
	{
		curdiv.style.display = "none";
		curbtn.src = "./pic/main/plus.gif";
		curbtn.title = "";
	}
}