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"}