function _switch(img) {
	img.src = img.src.indexOf("-on") > 0 ? img.src.replace("-on", "-off") : img.src.replace("-off", "-on");
	return;
}

function s(input) {
	input.select();
}

function f(obj, id) {
	var k = document.all ? window.event.keyCode : window.event.which;
	
	if(k != 9 && k != 16 && k != 17 && k != 18 && k != 20) {
		change = true;
		if(obj != null) {
			if(obj.id == "pn" || obj.id == "cn") {
				t = obj.id.substr(0, 1);
				if(obj.value == '?' || obj.value == '??') {
					for(i = 1; i <= (t == 'c' ? 2 : 3); i++) {
						img = document.getElementById("p_" + t + "n" + i);
						img.src = "http://www.britishcarregistrations.co.uk/img/layout/search-" + (t == 'c' ? i == 2 ? 3 : i : i) + ".png";
						img.width = 25;
					}
				} else {
					for(i = 1; i <= (t == 'c' ? 2 : 3); i++) {
						img = document.getElementById("p_" + t + "n" + i);
						img.width = 25;
						if(obj.value.substr(i-1, 1) != "") {
							img.src = 'http://www.britishcarregistrations.co.uk/img/char/' + obj.value.substr(i-1, 1) + '.png';
						} else {
							img.src = 'http://www.britishcarregistrations.co.uk/img/char/_.png';
						}
					}
				}
			} else if(obj.value.toUpperCase() < 'A' || obj.value.toUpperCase() > 'Z' || obj.value == '') {
				img = document.getElementById("p_" + obj.id);
				num = obj.id.substr(obj.id.length-1, 1);
				src = num >= '1' && num <= '3' && obj.id.substr(1, 1) == 's' ? "http://www.britishcarregistrations.co.uk/img/layout/search-abc" + num + ".png" : "http://www.britishcarregistrations.co.uk/img/layout/search-abc.png";
				
				obj.value = '';
				change = false;
				img.width = 25;
				img.src = src;
			} else {
				img = document.getElementById("p_" + obj.id);
				if(obj.value != "") {
					img.src = 'http://www.britishcarregistrations.co.uk/img/char/' + obj.value + '.png';
					img.width = 25;
				} else {
					img.src = 'http://www.britishcarregistrations.co.uk/img/char/_.png';
					img.width = 0;
				}
			}
		}
		if(change) {
			document.getElementById(id).focus();
		} 
	}
}

function chk(num) {
	document.forms[1].type[num].checked = true;
}

function toggle_dimensions() {
	var txt = document.getElementById("sizeh");
	txt = txt.disabled = !txt.disabled;
	var txt = document.getElementById("sizew");
	txt = txt.disabled = !txt.disabled;
}

function okeydokey() {
	var xmlhttp = window.XMLHttpRequest ? new XMLHttpRequest() : new ActiveXObject("Microsoft.XMLHTTP");
	
	xmlhttp.onreadystatechange = function() {
		if(xmlhttp.readyState == 4) {
			fade("out", 100, "protip");
		}
	}
	xmlhttp.open("POST","http://www.britishcarregistrations.co.uk/php/fav/showtip.php?set",true);
	xmlhttp.send(null);
	
	return false;
}

function firsttime() {
	var xmlhttp = window.XMLHttpRequest ? new XMLHttpRequest() : new ActiveXObject("Microsoft.XMLHTTP");
	
	xmlhttp.onreadystatechange = function() {
		if(xmlhttp.readyState == 4) {
			if(xmlhttp.responseText != "1") {
				document.getElementById("protip").style.visibility = "visible";
				document.getElementById("protiptitle").innerHTML = "First Time Searching?";
				document.getElementById("protipmsg").innerHTML = "If you see a plate you like, simply drag it here to add it to your favourites!"
															+ " This will allow you to \"shortlist\" your favourites, and get back to them easily.";
				fade("in", 0, "protip");
				setTimeout("fade('out', 100, 'protip')", 20000);
			}
		}
	}
	xmlhttp.open("POST","http://www.britishcarregistrations.co.uk/php/fav/showtip.php?get2&set2",true);
	xmlhttp.send(null);
}

function lowestprices(dir) {
	document.getElementById("protip").style.visibility = "visible";
	document.getElementById("protiptitle").innerHTML = "Guaranteed Lowest Prices!";
	document.getElementById("protipmsg").innerHTML = "Our prices are as low as they can possibly be that we GUARANTEE to at least match the price of an identical mark being advertised by another company!";
	fade(dir, dir == "in" ? 0 : 100, "protip");	
}


function slide(dir, i) {
	var img = document.getElementById("top10");
	if(i == undefined) {
		i = dir == "in" ? -150 : 0;
	}
	if((i == 0 && dir == "in") || (i == -150 && dir == "out")) {
		return;
	} else {
		i = dir == "in" ? i + 1 : i - 1;
		img.style.marginTop = i + "px";
		setTimeout("slide('" + dir + "', " + i + ")", 1);
	}
}

function searchkey(event, txt) {
	kc=event.keyCode;sk=event.shiftKey;if((((kc >= 65 && kc <= 90) && !sk)||((kc >= 97 && kc <= 122) && sk)) && !event.ctrlKey){txt.value+=String.fromCharCode(kc);return false;}
}