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) { //v4.01
  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_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];}
}


//QA open and close

function dk_showHideById(idName , cmd){
	if(!idName){
		alert('need a id name in one of HTML elements.');
		return;
	}
	
	var idObj = dk_findObj(idName);
	if(!idObj){
		alert('error!! no object name is ' + idName + ' in this HTML document.');
		return;
	}
	
	if(cmd == 'show' || cmd == 'hide'){
		dk_doShowHide(idObj , cmd);
	} else {
		alert('aneed one more argument [\'show\' or \'hide\'].');
		return;
	}
	
	
}
function dk_findObj(idName){
	var idObj = document.getElementById(idName);
	return idObj;
}
function dk_doShowHide(idObj , cmd){
	if(cmd == 'show'){
		idObj.style.display = '';
	} else if(cmd == 'hide'){
		idObj.style.display = 'none';
	}
}

//--------¨Ï¥ÎPNG for ie 6 -----//
function isIE(){
	var browser_str = navigator.userAgent;
	browser_str = browser_str.toLowerCase();
	if(browser_str.indexOf('msie') > -1){
		return true;
	} else {
		return false;
	}
}
function correctPNG() 
{
   for(var i=0; i<document.images.length; i++)
   {
	  var img = document.images[i]
	  var LW=img.width
	  var LH=img.height
	  var imgName = img.src.toUpperCase()
	  if (imgName.substring(imgName.length-3, imgName.length) == "PNG")
	  { 
         img.style.filter+="progid:DXImageTransform.Microsoft.AlphaImageLoader(src="+img.src+", sizingmethod=scale);" 
         img.src="images/mutual/blank.gif"
         img.width=LW
         img.height=LH
	  }
   }
}
if (isIE()) {window.attachEvent("onload", correctPNG);}