// JavaScript Document

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_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_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 && d.getElementById) x=d.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 iFrameHeight() {
   if(document.getElementById && !(document.all)) {
      var h = document.getElementById('blockrandom').contentDocument.body.scrollHeight;
      document.getElementById('blockrandom').style.height = h;
      }
   else if(document.all) {
      h = document.frames('blockrandom').document.body.scrollHeight;
      document.all.blockrandom.style.height = h;
      }
}

function checkRequiredName(form) {	
	name = form.username.value;
	if (name == ""){
		alert ("\n Please enter your name or pseudonym.");
		form.username.focus();
		return false;
	}
}