function openscreenid( id, width, height ) {
		xposition=20; yposition=20;
		if ((parseInt(navigator.appVersion) >= 4 )){
			xposition = (screen.width - width) / 2;
			yposition = (screen.height - height) / 2;
		} 
		
		args = "width=" + width + "," 
			    + "height=" + height + "," 
				+ "location=0," 
				+ "menubar=0,"
				+ "resizable=0,"
				+ "scrollbars=no,"
				+ "status=0," 
				+ "titlebar=0,"
				+ "toolbar=0,"
				+ "hotkeys=0,"
				+ "screenx=" + xposition + ","  //NN Only
				+ "screeny=" + yposition + ","  //NN Only
				+ "left=" + xposition + ","     //IE Only
				+ "top=" + yposition;           //IE Only 
		ww = window.open('index.php?popup=1&item_id='+id,'devlabc', args);
	}


var menus = new Array();

function showMenu(id) {
	menus[id] = false;
	document.getElementById(id).style.display = 'block';
}

function hide (id) {
	if (menus[id])
	{
		document.getElementById(id).style.display = 'none';
	}
}
function hideMenu(id) {
	menus[id] = true;
	hide(id);
}

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];}
}