// JavaScript Document

function getposOffset(overlay, offsettype){

var totaloffset=(offsettype=="left")? overlay.offsetLeft : overlay.offsetTop;

var parentEl=overlay.offsetParent;

while (parentEl!=null){

totaloffset=(offsettype=="left")? totaloffset+parentEl.offsetLeft : totaloffset+parentEl.offsetTop;

parentEl=parentEl.offsetParent;

}

return totaloffset;

}



function overlay(curobj, subobjstr, opt_position){

for (var i = 1; i<=100; i++) {

if (top.document.getElementById(i)) {top.document.getElementById(i).style.display='none';}

}

if (top.document.getElementById){

var subobj=top.document.getElementById(subobjstr)

subobj.style.display=(subobj.style.display!="block")? "block" : "none"

var xpos=getposOffset(curobj, "left")+((typeof opt_position!="undefined" && opt_position.indexOf("right")!=-1)? -(subobj.offsetWidth-curobj.offsetWidth) : 0) 

var ypos=getposOffset(curobj, "top")+((typeof opt_position!="undefined" && opt_position.indexOf("bottom")!=-1)? curobj.offsetHeight : 0)


groesse = opt_position.split(":");

if (opt_position != "bottom") {

var xpos=groesse[0];
var ypos=groesse[1];
}


if ( groesse[0] == "center") {

var xpos=groesse[0];
var ypos=groesse[1];


var ns6 = (!document.all && document.getElementById);
var ie4 = (document.all);
var ns4 = (document.layers);
if(ns6||ns4) {
sbreite = innerWidth;
shoehe = innerHeight;
}
else if(ie4) {
sbreite = document.body.clientWidth;
shoehe = document.body.clientHeight;
}

// es wird die Breite 500 px angenommen, wie sie z.Zt im CSS definiert ist

var xpos=(sbreite-500)/2;
var ypos=groesse[1];

}

subobj.style.left=xpos+"px"

subobj.style.top=ypos+"px"

var elem="f"+subobjstr;

//document.getElementById(elem).focus();

return false

}

else

return true




}

function overlayclose(subobj){

document.getElementById(subobj).style.display="none"

}