function targetLinks(windowOption) {
		if (windowOption == 0) 
			where = "_self";
		else if (windowOption == 1) {
			where = "alttext_sites";
		}
		else if (windowOption == 2) {
			where = "_blank";
		}			
		for (var i=0; i<=(document.links.length-1); i++) {
			if( document.links[i].type != "internal") {
				document.links[i].target = where;
			}
		}
	}