function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_preloadImages() { //v3.0
  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) { //v3.0
  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); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}


var dycCommendImages = new Array();
var dycCommendURLs = new Array();
var dycCommendTexts = new Array();
var dycCommendExts  = new Array();

function changeTo(n){
		var index =  eval(n)+2;
		var jpgFile = "images/intro_over_0"+index+".jpg";
		var btn = "btn"+(eval(n)+1) ;
		//alert(btn);
		//alert(jpgFile);
		MM_swapImage(btn,'',jpgFile,1);

		for(var i = 0 ; i < 3 ; i++ ){
			if(i==n)  continue ;
			index = eval(i)+2 ;
			jpgFile = "images/intro_btns_0"+index+".jpg";
			btn= "btn"+(eval(i)+1);
			MM_swapImage(btn,'',jpgFile,1);

		}


		changeContent(n);
}

function changeContent(n){

	if(dycCommendImages.length<n+1){
		return ;
	}
	if(dycCommendExts[n]=="swf"){
		//alert(dycCommendImages[n]);
		///dycImage.src="display:none";
		//alert(dycSwf.style);
		//dycSwf.style="display:";
		var fo1 = new FlashObject(dycCommendImages[n], "sss", "526", "172", "7", "#FFFFFF");
		fo1.addParam("quality", "high");
		fo1.write("dycSwf");

	}else{
		var content = "<A HREF='"+dycCommendURLs[n]+"'>"
						+"<IMG height=172 src='"+dycCommendImages[n]+"'"
						+" width=526 border=0></A> ";
		//dycImage.src = dycCommendImages[n];
		//alert(dycCommendExts[n]);
		//alert(dycSwf.style);
		//alert(content);
		dycSwf.innerHTML=content;
		
	}
	dycText.innerHTML = dycCommendTexts[n];
	//dycHref.href = dycCommendURLs[n];
	dycHref1.href = dycCommendURLs[n];

}



function addbookmark()
{
bookmarkurl="http://www.dycmusic.com"
bookmarktitle="约成唱片 商用音乐网"
if (document.all)
window.external.AddFavorite(bookmarkurl,bookmarktitle)
}

function writeBanner(obj,extName,href,name,file){
	if(extName=="swf"){
		var fo = new FlashObject(file, obj.id, "540", "70", "7", "#FFFFFF");
		fo.addParam("quality", "high");
		fo.write(obj.id);
	}else {
		
		var str = "<a href='"+href+"' target='_blank'><img src="+file+" width=540 height=70 border=0 alt='"+name+"'/></a>";
		obj.innerHTML=str ;

	}

}

function login(){

			with(document.forms["loginForm"]){

				if(isEmpty(userId.value)){
					alert("请填写用户名");
					userId.focus();
					return 
				}
			

				submit();
			}


}