// open window
function pop(URL) { //v2.0
  window.open(URL,'','status=yes,scrollbars=yes,resizable=yes,width=500,height=600');
}

// css class changer
function classChange(idname, clsnm) {
	idname.className = clsnm;
}

// this function toggles the status of a list
function toggle(image,list){
	var listElementStyle=document.getElementById(list).style;
	if (listElementStyle.display=="none"){
		listElementStyle.display="block";
		document.getElementById(image).src="images/arrow_open.gif";
		document.getElementById(image).alt="Close list";
	}else{
		listElementStyle.display="none";
		document.getElementById(image).src="images/arrow_closed.gif";
		document.getElementById(image).alt="Open list";
	}
}

function btoggle(image,list){
	var listElementStyle=document.getElementById(list).style;
	if (listElementStyle.display=="none"){
		listElementStyle.display="block";
		document.getElementById(image).src="images/black_arrow_open.gif";
		document.getElementById(image).alt="Close list";
	}else{
		listElementStyle.display="none";
		document.getElementById(image).src="images/black_arrow_closed.gif";
		document.getElementById(image).alt="Open list";
	}
}

function openport(id){
	window.open('portfolio/item/' + id + '/','portitem','width=790,height=500,toolbar,resizable,scrollbars,location')
}