//** jQuery Scroll to Top Control
var __page_scripts=document.getElementsByTagName("script");
var __jsPath=__page_scripts[__page_scripts.length-1].src.substring(0,__page_scripts[__page_scripts.length-1].src.lastIndexOf("/")+1);

var scrolltotop={
	setting:{startline:100,scrollto:0,scrollduration:1000,fadeduration:[500,100]},
	controlHTML:'<img src="'+__jsPath+'up.png"/>',
	controlattrs:{offsetx:5,offsety:5},
	anchorkeyword:'#top',
	state:{isvisible:false,shouldvisible:false},
	scrollup:function(){
		if(!this.cssfixedsupport)
			this.$control.css({opacity:0})
		var dest=isNaN(this.setting.scrollto)?this.setting.scrollto:parseInt(this.setting.scrollto)
		if(typeof dest=="string"&&jQuery('#'+dest).length==1)
			dest=jQuery('#'+dest).offset().top
		else
			dest=0
		this.$body.animate({scrollTop:dest},this.setting.scrollduration);
	},
	keepfixed:function(){
		var $window=jQuery(window)
		var controlx=$window.scrollLeft()+$window.width()-this.$control.width()-this.controlattrs.offsetx
		var controly=$window.scrollTop()+$window.height()-this.$control.height()-this.controlattrs.offsety
		this.$control.css({left:controlx+'px',top:controly+'px'})
	},
	togglecontrol:function(){
		var scrolltop=jQuery(window).scrollTop()
		if(!this.cssfixedsupport)
			this.keepfixed()
		this.state.shouldvisible=(scrolltop>=this.setting.startline)?true:false
		if(this.state.shouldvisible&&!this.state.isvisible){
			this.$control.stop().animate({opacity:1},this.setting.fadeduration[0])
			this.state.isvisible=true
		}
		else if(this.state.shouldvisible==false&&this.state.isvisible){
			this.$control.stop().animate({opacity:0},this.setting.fadeduration[1])
			this.state.isvisible=false
		}
	},
	init:function(){
		jQuery(document).ready(function($){
			var mainobj=scrolltotop;var iebrws=document.all
			mainobj.cssfixedsupport=!iebrws||iebrws&&document.compatMode=="CSS1Compat"&&window.XMLHttpRequest
			mainobj.$body=(window.opera)?(document.compatMode=="CSS1Compat"?$('html'):$('body')):$('html,body')
			mainobj.$control=$('<div id="topcontrol">'+mainobj.controlHTML+'</div>')
				.css({position:mainobj.cssfixedsupport?'fixed':'absolute',bottom:mainobj.controlattrs.offsety,right:mainobj.controlattrs.offsetx,opacity:0,cursor:'pointer'})
				//.attr({title:'Scroll Back to Top'})
				.click(function(){mainobj.scrollup();return false})
				.appendTo('body')
			if(document.all&&!window.XMLHttpRequest&&mainobj.$control.text()!='')
				mainobj.$control.css({width:mainobj.$control.width()})
			mainobj.togglecontrol()
			$('a[href="'+mainobj.anchorkeyword +'"]').click(function(){
				mainobj.scrollup();return false
			})
			$(window).bind('scroll resize',function(e){mainobj.togglecontrol()})
		})
	}
}
scrolltotop.init()