/*
	Use class "required" for all the required fields.
*/
function initPage()
{
	for (var i = 0; i < document.forms.length; i++)
	{
		document.forms[i].onsubmit = function ()
		{
			for (var i = 0; i < this.elements.length; i++)
			{
				if (this.elements[i].className.indexOf("required") != -1 && this.elements[i].value == "")
				{
					alert("Molimo, ispunite sva obavezan polja!");
					try { this.elements[i].focus() } catch (e) {};
					return false;
				}
			}
			return true;
		}
	}
}

if (window.addEventListener)
	window.addEventListener("load", initPage, false);
else if (window.attachEvent)
	window.attachEvent("onload", initPage);