function content() {


}
if (window.addEventListener) {
	window.addEventListener("load", content, false);
} else if (window.attachEvent) { 
	window.attachEvent("onload", content);
}

function addPeriod(obj)
{
	if (document.getElementById("searchclone").firstChild.nodeType == 3) {
		var cloneperiod = document.getElementById("searchclone").firstChild.nextSibling.cloneNode(true);
	} else {
		var cloneperiod = document.getElementById("searchclone").firstChild.cloneNode(true);
	}
	obj.parentNode.parentNode.parentNode.insertBefore(cloneperiod, obj.parentNode.parentNode.nextSibling);
}

function delPeriod(obj)
{
	var bs = document.getElementById("block_search");
	var fs = bs.getElementsByTagName("fieldset");
	var fsl = 0;
	for (var i = 0; i < fs.length; i++) {
		if (fs[i].className == "period") {
			fsl++;
		}	
	}
	if (fsl > 2) {
		var fieldset = obj.parentNode.parentNode;
		fieldset.parentNode.removeChild(fieldset);
	}
}

function presize()
{
	var lmh = document.documentElement.offsetHeight - document.getElementById("block_header").offsetHeight - document.getElementById("block_footer").offsetHeight - 84;
//	alert(document.documentElement.offsetHeight + "." + document.getElementById("block_header").offsetHeight + "." + document.getElementById("block_footer").offsetHeight + "." + 84);
//	document.getElementById("layout_main").style.height = lmh + "px";
}