function popup(url, width, height, options, pos, name){
	if(!url) return false;

	if(!width)	width	= screen.availWidth/2;
	if(!height)	height	= screen.availHeight/2;

	if(!pos) pos = "center-middle";

	aligns = pos.split("-");

	if(aligns[0] == "left")		xpos = 0;
	if(aligns[0] == "center")	xpos = (screen.availWidth-width)/2;
	if(aligns[0] == "right")	xpos = screen.availWidth-width-5;
	if(aligns[1] == "top")		ypos = 0;
	if(aligns[1] == "middle")	ypos = (screen.availHeight-height-50)/2;
	if(aligns[1] == "bottom")	ypos = screen.availHeight-height;

	flags = "";

	if(options == "simple"){
		flags += ",scrollbars";
		flags += ",resizable=yes";
		}
	if(options == "full"){
		flags += ",scrollbars";
		flags += ",resizable=yes";
		flags += ",menubar=yes";
		flags += ",location=yes";
		flags += ",toolbar=yes";
		flags += ",status=yes";
		}

	if(!name) name = "popup";

	sub = window.open(url,name,"width="+width+",height="+height+",left="+xpos+",top="+ypos+flags);
	sub.focus();
	}