var userAgent =navigator.userAgent.toLowerCase();
var is_opera =userAgent.indexOf('opera')!=-1&&opera.version();
var is_moz =('Gecko'==navigator.product) &&userAgent.substr(userAgent.indexOf('firefox')+8,3);
var is_ie =(userAgent.indexOf('msie')!=-1&& !is_opera) &&userAgent.substr(userAgent.indexOf('msie')+5,3);
var jsmenu =new Array(),ctrlobjclassName;
jsmenu['active']=new Array();jsmenu['timer']=new Array();jsmenu['iframe']=new Array();
function in_array(needle, haystack){
if(typeof needle=='string'||typeof needle=='number'){for(var i in haystack){if(haystack[i]==needle) return true;} }
return false;
}
function isUndefined(variable){return typeof variable=='undefined'? true : false;}
function initCtrl(ctrlobj, click, duration, timeout, layer){
if(ctrlobj&& !ctrlobj.initialized){
ctrlobj.initialized =true;ctrlobj.unselectable =true;
ctrlobj.outfunc =typeof ctrlobj.onmouseout=='function'? ctrlobj.onmouseout : null;
ctrlobj.onmouseout = function(){
if(this.outfunc) this.outfunc();
if(duration<3) jsmenu['timer'][ctrlobj.id] =setTimeout('hideMenu('+layer+')',timeout);
}
ctrlobj.overfunc =typeof ctrlobj.onmouseover=='function'? ctrlobj.onmouseover : null;
ctrlobj.onmouseover =function(e){
doane(e);
if(this.overfunc) this.overfunc();
if(click){
clearTimeout(jsmenu['timer'][this.id]);
}else{
for(var id in jsmenu['timer']){if(jsmenu['timer'][id]) clearTimeout(jsmenu['timer'][id]);}
} } } }
function initMenu(ctrlid, menuobj, duration, timeout, layer, drag){
if(menuobj&& !menuobj.initialized){
menuobj.initialized =true;menuobj.ctrlkey =ctrlid;menuobj.onclick =ebygum;menuobj.style.position='absolute';
if(duration<3){
if(duration>1){menuobj.onmouseover =function(){clearTimeout(jsmenu['timer'][ctrlid]);jsmenu['timer'][ctrlid] =null;} }
if(duration!=1){menuobj.onmouseout =function(){jsmenu['timer'][ctrlid] =setTimeout('hideMenu('+layer+')', timeout);} }
}
menuobj.style.zIndex=999+layer;
if(drag){
menuobj.onmousedown =function(event){try{menudrag(menuobj, event,1);}catch(e){} };
menuobj.onmousemove =function(event){try{menudrag(menuobj, event,2);}catch(e){} };
menuobj.onmouseup =function(event){try{menudrag(menuobj, event,3);}catch(e){} };
} } }
var menudragstart =new Array();
function menudrag(menuobj, e, op){
if(1==op){
if(in_array(is_ie ? event.srcElement.tagName : e.target.tagName,['TEXTAREA','INPUT','BUTTON','SELECT'])) return;
menudragstart =is_ie ? [event.clientX, event.clientY] : [e.clientX, e.clientY];
menudragstart[2] =parseInt(menuobj.style.left);menudragstart[3] =parseInt(menuobj.style.top);
doane(e);
}else if(op==2&&menudragstart[0]){
var menudragnow =is_ie ? [event.clientX, event.clientY] : [e.clientX, e.clientY];
menuobj.style.left =(menudragstart[2]+menudragnow[0] -menudragstart[0])+'px';
menuobj.style.top =(menudragstart[3]+menudragnow[1] -menudragstart[1])+'px';
doane(e);
}else if(3==op){
menudragstart =[];doane(e);
} }
function showMenu(ctrlid, click, offset, duration, timeout, layer, showid, maxh, drag){
var ctrlobj =document.getElementById(ctrlid);
if(!ctrlobj) return;
if(isUndefined(click)) click =false;if(isUndefined(offset)) offset=0;
if(isUndefined(duration)) duration=2;if(isUndefined(timeout)) timeout=500;
if(isUndefined(layer)) layer=0;if(isUndefined(showid)) showid =ctrlid;
var showobj =document.getElementById(showid),menuobj =document.getElementById(showid+'_menu');
if(!showobj||!menuobj) return;
if(isUndefined(maxh)) maxh=400;if(isUndefined(drag)) drag =false;
if(click &&jsmenu['active'][layer]==menuobj){hideMenu(layer);return;}else{hideMenu(layer);}
var len =jsmenu['timer'].length;
if(len>0){for(var i=0; i<len; i++){if(jsmenu['timer'][i]) clearTimeout(jsmenu['timer'][i]);} }
initCtrl(ctrlobj, click, duration, timeout, layer);
ctrlobjclassName =ctrlobj.className;ctrlobj.className+=' hover';
initMenu(ctrlid, menuobj, duration, timeout, layer, drag);menuobj.style.display='';
if(!is_opera){menuobj.style.clip='rect(auto,auto,auto,auto)';}
setMenuPosition(showid, offset);
if(maxh &&menuobj.scrollHeight >maxh){
menuobj.style.height =maxh+'px';if(is_opera){menuobj.style.overflow='auto';}else{menuobj.style.overflowY='auto';}
}
if(!duration) setTimeout('hideMenu('+layer+')',timeout);
jsmenu['active'][layer] =menuobj;
}
function setMenuPosition(showid, offset){
var showobj =document.getElementById(showid),menuobj =document.getElementById(showid+'_menu');
if(isUndefined(offset)) offset=0;
if(showobj){
showobj.pos =fetchOffset(showobj);
showobj.X =showobj.pos['left'];showobj.Y =showobj.pos['top'];
showobj.w =showobj.offsetWidth;showobj.h =showobj.offsetHeight;
menuobj.w =menuobj.offsetWidth;menuobj.h =menuobj.offsetHeight;
if(offset<3){
menuobj.style.left =(showobj.X+menuobj.w >document.body.clientWidth)&&(showobj.X+showobj.w -menuobj.w >=0) ? showobj.X+showobj.w -menuobj.w+'px': showobj.X+'px';
menuobj.style.top =offset==1? showobj.Y+'px': (offset==2||((showobj.Y+showobj.h+menuobj.h >document.documentElement.scrollTop+document.documentElement.clientHeight) &&(showobj.Y -menuobj.h >=0)) ? (showobj.Y -menuobj.h)+'px': showobj.Y+showobj.h+'px');
}else if(3==offset){
menuobj.style.left =(document.body.clientWidth -menuobj.clientWidth)/2+document.body.scrollLeft+'px';
menuobj.style.top =(document.body.clientHeight -menuobj.clientHeight)/2+document.body.scrollTop+'px';
}
if(menuobj.style.clip&& !is_opera) menuobj.style.clip='rect(auto,auto,auto,auto)';
} }
function hideMenu(layer){
if(isUndefined(layer)) layer=0;
if(jsmenu['active'][layer]){
try{document.getElementById(jsmenu['active'][layer].ctrlkey).className =ctrlobjclassName;}catch(e){}
clearTimeout(jsmenu['timer'][jsmenu['active'][layer].ctrlkey]);jsmenu['active'][layer].style.display='none';
if(is_ie &&is_ie<7&&jsmenu['iframe'][layer]){jsmenu['iframe'][layer].style.display='none';}
jsmenu['active'][layer] =null;
} }
function fetchOffset(obj){
var left_offset =obj.offsetLeft, top_offset =obj.offsetTop;
while((obj =obj.offsetParent)!=null){left_offset+=obj.offsetLeft;top_offset+=obj.offsetTop;}
return{'left':left_offset,'top':top_offset};
}
function ebygum(eventobj){
if(!eventobj ||is_ie){
window.event.cancelBubble =true;return window.event;
}else{
if(eventobj.target.type=='submit'){eventobj.target.form.submit();}
eventobj.stopPropagation();return eventobj;
} }
function doane(event){
e =event ? event : window.event;
if(is_ie){
e.returnValue =false;e.cancelBubble =true;
}else if(e){
e.stopPropagation();e.preventDefault();
} }
function updateseccode(){
var rand,obj=document.getElementById('seccodeimage');obj.innerHTML='sampling';rand=Math.random();
obj.innerHTML='<img id="seccode" onclick="updateseccode();" src="'+blogurl+'seccode.php?update='+rand+'" alt="验证码图片" title="点击更换图片" />';
}