function swapover(n) {

	if (document.images) {
		document.images['nav' + n].src = eval("navon" + n + ".src");
		}
	}

function swapout(n) {

	if (document.images) {
		document.images['nav' + n].src = eval("nav" + n + ".src");
		}
	}


if (document.images) {

	nav1 = new Image(301,226);
	nav1.src = "/pics/phy_opp.jpg";
	navon1 = new Image(301,226);
	navon1.src = "/pics/phy_oppon.jpg";
	
	nav2 = new Image(301,226);
	nav2.src = "/pics/sol_hos.jpg";
	navon2 = new Image(301,226);
	navon2.src = "/pics/sol_hoson.jpg";
	
	nav3 = new Image(299,226);
	nav3.src = "/pics/pat_con.jpg";
	navon3 = new Image(299,226);
	navon3.src = "/pics/pat_conon.jpg";
}

function roll(text, a, b, bg) {
	if (document.getElementById){
	//	document.getElementById(a).style.backgroundColor = bg;
		document.getElementById(b).style.backgroundColor = bg;
	//	document.getElementById(a).style.color = text;
		document.getElementById(b).style.color = text;
		document.getElementById(b).style.cursor = 'pointer';
	}
}

function rollback(text, a, b, bga, bgb) {
	if (document.getElementById){
	//	document.getElementById(a).style.backgroundColor = bga;
		document.getElementById(b).style.backgroundColor = bgb;
	//	document.getElementById(a).style.color = text;
		document.getElementById(b).style.color = text;
		document.getElementById(b).style.cursor = 'pointer';
	}
}
	
function show(id, type) {
	if (document.getElementById){
		document.getElementById(id).style.display = type;
	}
}

function hide(id) {
	if (document.getElementById){
		document.getElementById(id).style.display = 'none';
	}
}

function open_window1(url, width, height) {
	mywin1 = window.open(url,"win1",'alwaysRaised=1,toolbar=0,location=0,directories=0,status=1,menubar=0,scrollbars=1,resizable=1,width=' + width + ',height=' + height);
	mywin1.resizeTo(width, height);
	mywin1.focus();
}

function in_array(needle, haystack) {
	for(var j = 0; j < haystack.length; j++) {
		if(needle == haystack[j]) {
			return true;
		}
	}
	return false;
}

function check_required_new(form, fields) {
	//alert(fields.length);
	
	for(var i = 0; i < form.elements.length; i++) {
		if(in_array(form.elements[i].name, fields)) {
			//alert(form.elements[i].type);
			if(form.elements[i].type == "text" || form.elements[i].type == "password") {
				if(form.elements[i].value == "") {
					alert(form.elements[i].name + " is a required field");
					form.elements[i].focus();
					return false;
				}
			} else if(form.elements[i].type == "select-one") {
				//alert(fields[i].name + " is a pull-down");
				if(form.elements[i].selectedIndex == 0) {
					alert(form.elements[i].name + " is a required field");
					form.elements[i].focus();
					return false;
				}
			} else if(form.elements[i].type == 'radio') {
				var radio = form.elements[i].name;
				//alert(form[radio].length);
				for(var j = 0; j < form[radio].length; j++) {
					if(form[radio][j].checked == true) {
						var checked = true;
					}
				}
				
				if(checked != true) {
					alert(form.elements[i].name + " is a required field");
					form.elements[i].focus();
					return false;
				}
			} else if(form.elements[i].type == 'textarea') {
				if(form.elements[i].value == "") {
					alert(form.elements[i].name + " is a required field");
					form.elements[i].focus();
					return false;
				}
			}
		}
	}
	return true;
}