/***********************************************


* Drop Down/ Overlapping Content- © Dynamic Drive (www.dynamicdrive.com)


* This notice must stay intact for legal use.


* Visit http://www.dynamicdrive.com/ for full source code


***********************************************/





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"


}