// 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){
    if (document.getElementById){
    var subobj=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)
        subobj.style.left=xpos+"px"
        subobj.style.top=ypos+"px"
    return false
    }
    else
return true
}

function overlayclose(subobj){
    document.getElementById(subobj).style.display="none"
}