/** JAVASCRIPT FOR MENU BUTTON HOVER EFFECT **/

	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];}
	}


	/** SET MAX LENGTH IN TEXTAREA **/
	function ismaxlength(obj)
	{
		var mlength=obj.getAttribute? parseInt(obj.getAttribute("maxlength")) : ""
		if (obj.getAttribute && obj.value.length>mlength)
		obj.value=obj.value.substring(0,mlength)
	}
	
	
	/** SIMPLE NAVIGATION EFFECT **/
	function img_act(img, img_src)
	{
	  document.images[img].src = img_src;
	}

	function img_inact(img,srcs)
	{
	  document.images[img].src = srcs;
	}
	function submitenter(myfield,e)
	{
		var keycode;
		if (window.event) keycode = window.event.keyCode;
		else if (e) keycode = e.which;
		else return true;
		if (keycode == 13)
		{
			document.login_form.submit();
			return false;
		}
		else
			return true;
	}
	
	
	/** SIMPLE SHOW AND HIDE DIV EFFECT **/
	function showhiddenmenu(theid)
	{
		
		theelement = document.getElementById(theid);

		theelement.style.display = 'block';
	}
	
	function hidehiddenmenu(theid)
	{
		
		theelement1 = document.getElementById(theid);
		
		theelement1.style.display = 'none';
	}
	
	
	/** HIGHLIGHT POP UP **/
	function windowPopUp(locationurl)
	{
		
		windowOpener(768, 1024, 'Gempa', locationurl);
	}
	
	function windowOpener(windowHeight, windowWidth, windowName, windowUri)
	{
		var centerWidth = (window.screen.width - windowWidth) / 2;
		var centerHeight = (window.screen.height - windowHeight) / 2;

		newWindow = window.open(windowUri, windowName, 'resizable=0,width=' + windowWidth + 
			',height=' + windowHeight + 
			',left=' + centerWidth + 
			',top=' + centerHeight);

		newWindow.focus();
		return newWindow.name;
	}