var disappeardelay=250;var ie4=document.all;var ns6=document.getElementById&&!document.all;function getposOffset(what,offsettype){var totaloffset=(offsettype=="left")?what.offsetLeft:what.offsetTop;var parentEl=what.offsetParent;while(parentEl!=null){totaloffset=(offsettype=="left")?totaloffset+parentEl.offsetLeft:totaloffset+parentEl.offsetTop;parentEl=parentEl.offsetParent;}return totaloffset;}function showhide(obj,e,visible,hidden){if(e.type=="click"&&obj.visibility==hidden||e.type=="mouseover")obj.visibility=visible;else if(e.type=="click")obj.visibility=hidden;}function iecompattest(){return(document.compatMode&&document.compatMode!="BackCompat")?document.documentElement:document.body;}function clearbrowseredge(obj,whichedge){var edgeoffset=0;if(whichedge=="rightedge"){var windowedge=ie4&&!window.opera?iecompattest().scrollLeft+iecompattest().clientWidth-15:window.pageXOffset+window.innerWidth-15;dropmenuobj.contentmeasure=dropmenuobj.offsetWidth;if(windowedge-dropmenuobj.x<dropmenuobj.contentmeasure)edgeoffset=dropmenuobj.contentmeasure-obj.offsetWidth;}else{var topedge=ie4&&!window.opera?iecompattest().scrollTop:window.pageYOffset;var windowedge=ie4&&!window.opera?iecompattest().scrollTop+iecompattest().clientHeight-15:window.pageYOffset+window.innerHeight-18;dropmenuobj.contentmeasure=dropmenuobj.offsetHeight;if(windowedge-dropmenuobj.y<dropmenuobj.contentmeasure){edgeoffset=dropmenuobj.contentmeasure+obj.offsetHeight;if((dropmenuobj.y-topedge)<dropmenuobj.contentmeasure)edgeoffset=dropmenuobj.y+obj.offsetHeight-topedge;}}return edgeoffset;}function populatemenu(what){if(ie4||ns6)dropmenuobj.innerHTML=what.join("");}function dropdownmenu(obj,e,menucontents){if(window.event)event.cancelBubble=true;else if(e.stopPropagation)e.stopPropagation();clearhidemenu();dropmenuobj=document.getElementById?document.getElementById("dropmenudiv"):dropmenudiv;populatemenu(menucontents);if(ie4||ns6){showhide(dropmenuobj.style,e,"visible","hidden");dropmenuobj.x=getposOffset(obj,"left");dropmenuobj.y=getposOffset(obj,"top");dropmenuobj.style.left=dropmenuobj.x-clearbrowseredge(obj,"rightedge")+"px";dropmenuobj.style.top=dropmenuobj.y-clearbrowseredge(obj,"bottomedge")+obj.offsetHeight+"px";}return clickreturnvalue();}function clickreturnvalue(){if(ie4||ns6)return false;else return true;}function contains_ns6(a,b){while(b.parentNode)if((b=b.parentNode)==a)return true;return false;}function dynamichide(e){if(ie4&&!dropmenuobj.contains(e.toElement))delayhidemenu();else if(ns6&&e.currentTarget!=e.relatedTarget&&!contains_ns6(e.currentTarget,e.relatedTarget))delayhidemenu();}function hidemenu(e){if(typeof dropmenuobj!="undefined"){if(ie4||ns6)dropmenuobj.style.visibility="hidden";}}function delayhidemenu(){if(ie4||ns6)delayhide=setTimeout("hidemenu()",disappeardelay);}function clearhidemenu(){if(typeof delayhide!="undefined")clearTimeout(delayhide);}var menu1;function selectSearch(o){var ob=o;if(ob.value=="1"){document.getElementById("top_search").action="/search_book.php";document.getElementById("top_search_text").name="k";}else if(ob.value=="2"){document.getElementById("top_search").action="/search_book.php";document.getElementById("top_search_text").name="a";}else if(ob.value=="3"){document.getElementById("top_search").action="/search_booklist.php";document.getElementById("top_search_text").name="k";}else if(ob.value=="4"){document.getElementById("top_search").action="/search_dzs.php";document.getElementById("top_search_text").name="k";}}document.write('<div class="menu_div" id="dropmenudiv" onMouseover="clearhidemenu()" onMouseout="dynamichide(event)" style="position:absolute;top:-15px;z-index:11;"></div>');