/*

CUSTOM FORM ELEMENTS

*/
//this code will restyle comboboxes
var checkboxHeight = "25";
var radioHeight = "25";
var selectWidth = "";

// This is rendering when a page has window.onload=functiontoexecute;
document.write('<style type="text/css">input.styled { display: none; } select.styled { position: relative; width: ' + selectWidth + 'px; opacity: 0;filter: alpha(opacity=0); z-index: 5; }</style>');

var Custom = {
	init: function() {
		var inputs = document.getElementsByTagName("input"), span = Array(), textnode, option, active;
		for(a = 0; a < inputs.length; a++) {
			if((inputs[a].type == "checkbox" || inputs[a].type == "radio") && inputs[a].className == "styled") {
				span[a] = document.createElement("span");
				span[a].className = inputs[a].type;

				if(inputs[a].checked == true) {
					if(inputs[a].type == "checkbox") {
						position = "0 -" + (checkboxHeight*2) + "px";
						span[a].style.backgroundPosition = position;
					} else {
						position = "0 -" + (radioHeight*2) + "px";
						span[a].style.backgroundPosition = position;
					}
				}
				inputs[a].parentNode.insertBefore(span[a], inputs[a]);
				span[a].onmousedown = Custom.pushed;
				span[a].onmouseup = Custom.check;
				document.onmouseup = Custom.clear;
			}
		}
		inputs = document.getElementsByTagName("select");
		for(a = 0; a < inputs.length; a++) {
			if(inputs[a].className == "styled") {
				option = inputs[a].getElementsByTagName("option");
				
				if (option[0].childNodes.length == 0){
				    active = "   -SELECT-";
				} else {
				    active = option[0].childNodes[0].nodeValue;
				}
				
				textnode = document.createTextNode(active);
				for(b = 1; b < option.length; b++) {
					if(option[b].selected == true) {
						textnode = document.createTextNode(option[b].childNodes[0].nodeValue);
					}
				}
				span[a] = document.createElement("span");
				span[a].className = "select";
				//span[a].innerHTML = "<span></span>";
				span[a].id = "select" + inputs[a].name;
				span[a].appendChild(textnode);
				inputs[a].parentNode.insertBefore(span[a], inputs[a]);
				
				var old_onchange = typeof(inputs[a].onchange) != 'undefined' ? inputs[a].onchange : null;
				var elm_id = inputs[a].id;
				
				if (old_onchange != null)
				    inputs[a].onchange = function(e){old_onchange(); Custom.choose(e);};
			    else
			        inputs[a].onchange = function(e){Custom.choose(e);};
			}
		}
	},
	pushed: function() {
		element = this.nextSibling;
		if(element.checked == true && element.type == "checkbox") {
			this.style.backgroundPosition = "0 -" + checkboxHeight*3 + "px";
		} else if(element.checked == true && element.type == "radio") {
			this.style.backgroundPosition = "0 -" + radioHeight*3 + "px";
		} else if(element.checked != true && element.type == "checkbox") {
			this.style.backgroundPosition = "0 -" + checkboxHeight + "px";
		} else {
			this.style.backgroundPosition = "0 -" + radioHeight + "px";
		}
	},
	check: function() {
		device = this.nextSibling;
		if(device.checked == true && device.type == "checkbox") {
			this.style.backgroundPosition = "0 0";
			device.checked = false;
		} else {
			if(device.type == "checkbox") {
				this.style.backgroundPosition = "0 -" + checkboxHeight*2 + "px";
			} else {
				this.style.backgroundPosition = "0 -" + radioHeight*2 + "px";
				group = this.nextSibling.name;
				inputs = document.getElementsByTagName("input");
				for(a = 0; a < inputs.length; a++) {
					if(inputs[a].name == group && inputs[a] != this.nextSibling) {
						inputs[a].previousSibling.style.backgroundPosition = "0 0";
					}
				}
			}
			device.checked = true;
		}
	},
	clear: function() {
		var clear = document.getElementsByTagName("input");
		for(var b = 0; b < clear.length; b++) {
			if(clear[b].type == "checkbox" && clear[b].checked == true) {
				clear[b].previousSibling.style.backgroundPosition = "0 -" + checkboxHeight*2 + "px";
			} else if(clear[b].type == "checkbox") {
				clear[b].previousSibling.style.backgroundPosition = "0 0";
			} else if(clear[b].type == "radio" && clear[b].checked == true) {
				clear[b].previousSibling.style.backgroundPosition = "0 -" + radioHeight*2 + "px";
			} else if(clear[b].type == "radio") {
				clear[b].previousSibling.style.backgroundPosition = "0 0";
			}
		}
	},
	choose: function(e) {
	    var targ;
	    if (!e) var e = window.event;
	    if (e.target) targ = e.target;
	    else if (e.srcElement) targ = e.srcElement;
	    if (targ.nodeType == 3) // defeat Safari bug
		    targ = targ.parentNode;
	
	    var elm  = document.getElementById(targ.id);
	    var option = elm.getElementsByTagName("option");
	    
	    var idx = targ.selectedIndex;
	    
		document.getElementById("select" + elm.name).childNodes[0].nodeValue = option[idx].childNodes[0].nodeValue;
	}
}

/*show/hide*/
function showElement (elementid) {
    document.getElementById(elementid).style.display="";
}
function hideElement (elementid) {
    document.getElementById(elementid).style.display="none";
}