function isEven( num ) {
	return (num % 2) ? false : true
	}

function imageSwitch() {
	
	var myChar = p1.src;
	var myNum = myChar.charAt(myChar.length-5);
	
	if (isEven(myNum))
		myNum = myNum-1;
	else
		myNum++;
	
	p1.src = "images/photo_" + myNum + ".jpg";
	}

// Gallery popup stuff.
var newWindow = null;

function closeWin() {
	if (newWindow != null){
		if(!newWindow.closed)
			newWindow.close();
		}
	}

function popupwin(url, type, strWidth, strHeight) {
	closeWin();
	
	if (type == "fullScreen"){
		strWidth = screen.availWidth - 10;
		strHeight = screen.availHeight - 160;
		}
	else {
		strWidth = strWidth + 60;
		strHeight = strHeight + 123;
		}
	
	var tools="";
	if (type == "standard" || type == "fullScreen") tools = "resizable,toolbar=yes,location=yes,scrollbars=yes,menubar=yes,width="+strWidth+",height="+strHeight+",top=0,left=0";
	if (type == "console") tools = "resizable,toolbar=no,location=no,scrollbars=no,width="+strWidth+",height="+strHeight+"";
	newWindow = window.open(url, 'newWin', tools);
	newWindow.focus();
	}
// Gallery popup stuff end.