function swap(item) {
 	/* document.getElementById(item).src = "images/menu/blocks/"+item+"2.gif"; */
	document.getElementById(item).className = "menuChoiceOver";
 }
 function swapback(item) {
 	/* document.getElementById(item).src = "images/menu/blocks/"+item+".gif"; */
	document.getElementById(item).className = "menuChoice";
 }
 
 function swapSub(item) {
 	/* document.getElementById(item).src = "images/menu/blocks/"+item+"2.gif"; */
	document.getElementById(item).className = "submenuOver";
 }
 function swapbackSub(item) {
 	/* document.getElementById(item).src = "images/menu/blocks/"+item+".gif"; */
	document.getElementById(item).className = "submenu";
 }
 
 function fillDate() {
	var today = new Date();
	var month = today.getMonth() + 1;
	var day = today.getDate();
	var year = today.getFullYear();
	
	document.registrationForm.signUpDate.value = year + "-" + month + "-" + day;
 }
 
 function fillHeadBG() {
	var images = new Array(3);
	images[0] = "headBG1";
	images[1] = "headBG2";
	images[2] = "headBG3";
	
	var index = Math.floor(Math.random() * images.length);
	
	document.getElementById('header').className = images[index];
 }
 
function historyShow(showMe) {
	var i=1;
	while(myElem = eval("document.getElementById('history"+i+"');")) {
	
		if(i==showMe){
		 myElem.style.display = '';
		}
		else {
		 myElem.style.display = 'none';
		}
		i++;
	}
}

function historyDisplay(showNum) {
	var myElement = eval("document.getElementById('history"+showNum+"');");
		if(myElement.style.display == '') {
		 myElement.style.display = 'none';
		}
		else {
		 historyShow(showNum);
		}
}