function onWatermarkTextBoxFocus()
{
    if (this.value == this.watermark)
    {
        this.value = "";
        this.className = this.className.replace("Watermark", "");
    }
}

function onWatermarkTextBoxBlur()
{
    if (this.value.length == 0)
    {
        this.value = this.watermark;
        this.className += " Watermark";
    }
}

function initWatermarkTextBoxes()
{
    var inputs = document.getElementsByTagName("input");
    for (i = 0; i <inputs.length; ++i)
        if (inputs[i].type == "text"
            && inputs[i].className.indexOf("Watermark") != -1)
        {
            inputs[i].watermark = inputs[i].value;
            inputs[i].onfocus = onWatermarkTextBoxFocus;
            inputs[i].onblur = onWatermarkTextBoxBlur;
        }
}

function initCommentFormUrlCheck()
{
	var form = document.getElementById('commentform');
	if(form != null)
	{
		form.onsubmit = commentFormUrlCheck;
	}
}

function commentFormUrlCheck()
{
	if(this.url.value == this.url.watermark)
	{
		this.url.value = "";
	}
}

function initAll()
{
	initWatermarkTextBoxes();
	initCommentFormUrlCheck();
}

window.onload = initAll;