var boolRool = false;
//browser checking
var browsername=navigator.appName;
var platform;
if (browsername.indexOf("Netscape")!=-1) {browsername="NS"}
else
{if (browsername.indexOf("Microsoft")!=-1) {browsername="MSIE"
	browserversion="0";
	platform="";
	if (navigator.appVersion.indexOf("2.")!=-1) {browserversion="2"};
	if (navigator.appVersion.indexOf("3.")!=-1) {browserversion="3"};
	if (navigator.appVersion.indexOf("4.")!=-1) {browserversion="4"};
	if (navigator.appVersion.indexOf("5.")!=-1) {browserversion="5"}; 
	if (navigator.platform.indexOf("Win32")!=-1) {platform="Win32"};
	if (navigator.platform.indexOf("Mac")!=-1) {platform="Mac"};

}
else {browsername="N/A"}
};
//end of browser checking

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_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_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];}
}

//load the highlight image for the current menu
function selectImageMenu(imageName){
	
//load the menu image

	switch (imageName) 
		{ 

		case "head9" : 
			document.header.src = '../img/head_volunteer_m.gif'
			break;
		case "head9_1" : 
			document.header.src = '../img/head_volunteer.gif'
			break;
		case "head9_2" : 
			document.header.src = '../img/head_volunteer_meet.gif'
			break;
		case "head9_3" : 
			document.header.src = '../img/head_volunteer_how.gif'
			break;

		case "left9_1" : 
			document.l9_1.src = '../img/l_volunteer_departx.gif'
			break; 
		case "left9_2" : 
			document.l9_2.src = '../img/l_volunteer_meetx.gif'
			break; 
		case "left9_3" : 
			document.l9_3.src = '../img/l_volunteer_eventx.gif'
			break; 
		case "left9_4" : 
			document.l9_4.src = '../img/l_volunteer_howx.gif'
			break; 
		case "left9_5" : 
			document.l9_5.src = '../img/l_volunteer_contactx.gif'
			break; 
			
		case "corner1" : 
			document.corner.src = '../img/l_corner.gif'
			break; 
		case "corner2" : 
			document.corner.src = '../img/l_corner_sub.gif'
			break; 
		case "corner3" : 
			document.corner.src = '../img/l_corner_sub2.gif'
			break; 
		//allow the rool over
		boolRool = true;
		}
	}