host = "/";

if (document.images) {
	buttons = new Array();
}

function create_button(buttonName) {
	buttons[buttonName] = new button(buttonName,buttonName);
}

function create_arrow_button(buttonName) {
	buttons[buttonName] = new button(buttonName,"arrow");
}

function create_back_button(buttonName) {
	buttons[buttonName] = new button(buttonName,"backarrow");
}

function button(buttonName,imgName) {
	this.name = buttonName;
        this.out = new Image();
	this.out.src = host + "images/button/" + imgName + ".gif";
        this.over = new Image();
	this.over.src = host + "images/button/" + imgName + "_over.gif";
        this.down = new Image();
	this.down.src = host + "images/button/" + imgName + "_down.gif";
	this.state_over = 0;
	this.state_down = 0;

	return this;
}

function all_buttons_out(buttonName) {
	for (i = 0; i < buttons.length; i++) {
		button_out(buttons[i].name);
	}
}

function button_out(buttonName) {
        buttons[buttonName].state_over = 0;
        buttons[buttonName].state_down = 0;
        if(document.images) {
                document.images[buttonName].src = buttons[buttonName].out.src;
        }
}

function button_over(buttonName) {
        buttons[buttonName].state_over = 1;
        if (buttons[buttonName].state_down == 1) {
		button_down(buttonName);
	}
        else if(document.images) {
                document.images[buttonName].src = buttons[buttonName].over.src;
        }
}

function button_down(buttonName) {
        buttons[buttonName].state_down = 1;
        if (document.images) {
                document.images[buttonName].src = buttons[buttonName].down.src;
        }
}

function button_up(buttonName) {
	buttons[buttonName].state_down = 0;
        if (buttons[buttonName].state_over == 1) {
		button_over(buttonName);
	}
}

function button_html(url,buttonName,altText) {
	document.write("<A HREF=\"" + url + "\" onMouseOver=\"button_over('" + buttonName + "')\" onMouseDown=\"button_down('" + buttonName + "')\" onMouseUp=\"button_up('" + buttonName + "')\" onMouseOut=\"button_out('" + buttonName + "')\"><IMG NAME=login SRC=\"" + host + "images/button/" + buttonName + ".jpg\" ALIGN=RIGHT ALT=\"" + altText + "\" BORDER=0></A>");
}