function MM_swapImgRestore() {
	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() {
	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) {
	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 && document.getElementById) x=document.getElementById(n); return x;
}

function MM_swapImage() {
	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];}
}

function pickImage() {
	var numImages = 9;
	var masthead = document.images['masthead'];
	var randNum = Math.floor(Math.random() * (numImages - 1));
	
	if (randNum == 0) {
		masthead.src = "images/masthead.jpg";
	} else if (randNum == 1) {
		masthead.src = "images/masthead_onaroll.jpg";
	} else if (randNum == 2) {
		masthead.src = "images/masthead6.jpg";	
	} else if (randNum == 3) {
		masthead.src = "images/masthead_blind.jpg";	
	} else if (randNum == 4) {
		masthead.src = "images/masthead_mackeral.jpg";	
	} else if (randNum == 5) {
		masthead.src = "images/masthead_memory.jpg";
	} else if (randNum == 6) {
		masthead.src = "images/masthead_roscoe.jpg";
	} else if (randNum == 7) {
		masthead.src = "images/masthead_seabird.jpg";
	} else if (randNum == 8) {
		masthead.src = "images/masthead_stork.jpg";
	} else {
		masthead.src = "images/masthead.jpg";	
	}
}