var xOp7Up,xOp6Dn,xIE4Up,xIE4,xIE5,xNN4,xUA=navigator.userAgent.toLowerCase();

if(window.opera){
	var i=xUA.indexOf('opera');
	if(i!=-1){
		var v=parseInt(xUA.charAt(i+6));
		xOp7Up=v>=7;
		xOp6Dn=v<7;
	}
}else if(navigator.vendor!='KDE' && document.all && xUA.indexOf('msie')!=-1){
	xIE4Up=parseFloat(navigator.appVersion)>=4;
	xIE4=xUA.indexOf('msie 4')!=-1;
	xIE5=xUA.indexOf('msie 5')!=-1;
}else if(document.layers){
	xNN4=true;
}

xMac=xUA.indexOf('mac')!=-1;

function xBackground(e,c,i){
	if(!(e=xGetElementById(e))){
		return '';
	}
	var bg='';
	if(e.style){
		if(xStr(c)){
			if(!xOp6Dn){
				e.style.backgroundColor=c;
			}else{
				e.style.background=c;
			}
		}
		if(xStr(i)){
			e.style.backgroundImage=(i!='')? 'url('+i+')' : null;
		}
		if(!xOp6Dn){
			bg=e.style.backgroundColor;
		}else{
			bg=e.style.background;
		}
	}
	return bg;
}

function xClientHeight(){
	var h=0;
	if(xOp6Dn){
		h=window.innerHeight;
	}else if(document.compatMode == 'CSS1Compat' && !window.opera && document.documentElement && document.documentElement.clientHeight){
		h=document.documentElement.clientHeight;
	}else if(document.body && document.body.clientHeight){
		h=document.body.clientHeight;
	}else if(xDef(window.innerWidth,window.innerHeight,document.width)){
		h=window.innerHeight;
		if(document.width>window.innerWidth){
			h-=16;
		}
	}
	return h;
}

function xClientWidth(){
	var w=0;
	if(xOp6Dn){
		w=window.innerWidth;
	}else if(document.compatMode == 'CSS1Compat' && !window.opera && document.documentElement && document.documentElement.clientWidth){
		w=document.documentElement.clientWidth;
	}else if(document.body && document.body.clientWidth){
		w=document.body.clientWidth;
	}else if(xDef(window.innerWidth,window.innerHeight,document.height)){
		w=window.innerWidth;
		if(document.height>window.innerHeight){
			w-=16;
		}
	}
	return w;
}

function xClip(e,t,r,b,l){
	if(!(e=xGetElementById(e))){
		return;
	}
	if(e.style){
		if(xNum(l)){
			e.style.clip='rect('+t+'px '+r+'px '+b+'px '+l+'px)';
		}else{
			e.style.clip='rect(0 '+parseInt(e.style.width)+'px '+parseInt(e.style.height)+'px 0)';
		}
	}
}

function xColor(e,s){
	if(!(e=xGetElementById(e))){
		return '';
	}
	var c='';
	if(e.style && xDef(e.style.color)){
		if(xStr(s)){
			e.style.color=s;c=e.style.color;
		}
	}
	return c;
}

function xDef(){
	for(var i=0; i<arguments.length; ++i){
		if(typeof(arguments[i])=='undefined'){
			return false;
		}
	}
	return true;
}

function xDisplay(e,s){
	if(!(e=xGetElementById(e))){
		return null;
	}
	if(e.style && xDef(e.style.display)){
		if(xStr(s)){
			e.style.display = s;return e.style.display;
		}
	}
	return null;
}

function xGetComputedStyle(oEle, sProp, bInt){
	var s, p = 'undefined';
	var dv = document.defaultView;
	if(dv && dv.getComputedStyle){
		s = dv.getComputedStyle(oEle,'');
		if(s){
			p = s.getPropertyValue(sProp);
		}
	}else if(oEle.currentStyle){
		var a = sProp.split('-');
		sProp = a[0];
		for(var i=1; i<a.length; ++i){
			c = a[i].charAt(0);
			sProp += a[i].replace(c, c.toUpperCase());
		}
		p = oEle.currentStyle[sProp];
	}else{
		return null;
	}
	return bInt ? (parseInt(p) || 0) : p;
}

function xGetElementById(e){
	if(typeof(e)!='string'){
		return e;
	}
	if(document.getElementById){
		e=document.getElementById(e);
	}else if(document.all){
		e=document.all[e];
	}else{
		e=null;
	}
	return e;
}

function xHasPoint(e,x,y,t,r,b,l){
	if(!xNum(t)){
		t=r=b=l=0;
	}else if(!xNum(r)){
		r=b=l=t;
	}else if(!xNum(b)){
		l=r; b=t;
	}
	var eX = xPageX(e), eY = xPageY(e);
	return (x >= eX + l && x <= eX + xWidth(e) - r &&y >= eY + t && y <= eY + xHeight(e) - b );
}

function xHeight(e,h){
	if(!(e=xGetElementById(e))){
		return 0;
	}
	if(xNum(h)){
		if(h<0){
			h = 0;
		}else{
			h=Math.round(h);
		}
	}else{
		h=-1;
	}
	var css=xDef(e.style);
	if(e == document || e.tagName.toLowerCase() == 'html' || e.tagName.toLowerCase() == 'body'){
		h = xClientHeight();
	}else if(css && xDef(e.offsetHeight) && xStr(e.style.height)){
		if(h>=0){
			var pt=0,pb=0,bt=0,bb=0;
			if(document.compatMode=='CSS1Compat'){
				var gcs = xGetComputedStyle;
				pt=gcs(e,'padding-top',1);
				if(pt !== null){
					pb=gcs(e,'padding-bottom',1);
					bt=gcs(e,'border-top-width',1);
					bb=gcs(e,'border-bottom-width',1);
				}else if(xDef(e.offsetHeight,e.style.height)){
					e.style.height=h+'px';
					pt=e.offsetHeight-h;
				}
			}
			h-=(pt+pb+bt+bb);
			if(isNaN(h)||h<0) return;else e.style.height=h+'px';
		}
		h=e.offsetHeight;
	}else if(css && xDef(e.style.pixelHeight)){
		if(h>=0){
			e.style.pixelHeight=h;h=e.style.pixelHeight;
		}
	}
	return h;
}

function xHide(e){
	return xVisibility(e,0);
}

function xLeft(e, iX){
	if(!(e=xGetElementById(e))){
		return 0;
	}
	var css=xDef(e.style);
	if(css && xStr(e.style.left)){
		if(xNum(iX)){
			e.style.left=iX+'px';
		}else{
			iX=parseInt(e.style.left);
			if(isNaN(iX)){
				iX=0;
			}
		}
	}else if(css && xDef(e.style.pixelLeft)){
		if(xNum(iX)){
			e.style.pixelLeft=iX;
		}else{
			iX=e.style.pixelLeft;
		}
	}
	return iX;
}

function xMoveTo(e,x,y){
	xLeft(e,x);
	xTop(e,y);
}

function xNum(){
	for(var i=0; i<arguments.length; ++i){
		if(isNaN(arguments[i]) || typeof(arguments[i])!='number'){
			return false;
		}
	}
	return true;
}

function xOffsetLeft(e){
	if(!(e=xGetElementById(e))){
		return 0;
	}
	if(xDef(e.offsetLeft)){
		return e.offsetLeft;
	}else{
		return 0;
	}
}

function xOffsetTop(e){
	if(!(e=xGetElementById(e))){
		return 0;
	}
	if(xDef(e.offsetTop)){
		return e.offsetTop;
	}else{
		return 0;
	}
}

function xPageX(e){
	if(!(e=xGetElementById(e))){
		return 0;
	}
	var x = 0;
	while(e){
		if(xDef(e.offsetLeft)){
			x += e.offsetLeft;
		}
		e = xDef(e.offsetParent) ? e.offsetParent : null;
	}
	return x;
}

function xPageY(e){
	if(!(e=xGetElementById(e))){
		return 0;
	}
	var y = 0;
	while(e){
		if(xDef(e.offsetTop)){
			y += e.offsetTop;e = xDef(e.offsetParent) ? e.offsetParent : null;
		}
	}
	return y;
}

function xParent(e, bNode){
	if(!(e=xGetElementById(e))){
		return null;
	}
	var p=null;
	if(!bNode && xDef(e.offsetParent)){
		p=e.offsetParent;
	}else if(xDef(e.parentNode)){
		p=e.parentNode;
	}else if(xDef(e.parentElement)){
		p=e.parentElement;
	}
	return p;
}

function xResizeTo(e,w,h){
	xWidth(e,w);
	xHeight(e,h);
}

function xScrollLeft(e, bWin){
	var offset=0;
	if(!xDef(e) || bWin || e == document || e.tagName.toLowerCase() == 'html' || e.tagName.toLowerCase() == 'body'){
		var w = window;
		if(bWin && e){
			w = e;
		}
		if(w.document.documentElement && w.document.documentElement.scrollLeft){
			offset=w.document.documentElement.scrollLeft;
		}else if(w.document.body && xDef(w.document.body.scrollLeft)){
			offset=w.document.body.scrollLeft;
		}
	}else{
		e = xGetElementById(e);
		if(e && xNum(e.scrollLeft)){
			offset = e.scrollLeft;
		}
	}
	return offset;
}

function xScrollTop(e, bWin){
	var offset=0;
	if(!xDef(e) || bWin || e == document || e.tagName.toLowerCase() == 'html' || e.tagName.toLowerCase() == 'body'){
		var w = window;
		if(bWin && e){
			w = e;
		}
		if(w.document.documentElement && w.document.documentElement.scrollTop){
			offset=w.document.documentElement.scrollTop;
		}else if(w.document.body && xDef(w.document.body.scrollTop)){
			offset=w.document.body.scrollTop;
		}
	}else{
		e = xGetElementById(e);
		if(e && xNum(e.scrollTop)){
			offset = e.scrollTop;
		}
	}
	return offset;
}

function xShow(e){
	return xVisibility(e,1);
}

function xStr(s){
	for(var i=0; i<arguments.length; ++i){
		if(typeof(arguments[i])!='string'){
			return false;
		}
	}
	return true;
}

function xTop(e, iY){
	if(!(e=xGetElementById(e))){
		return 0;
	}
	var css=xDef(e.style);
	if(css && xStr(e.style.top)){
		if(xNum(iY)){
			e.style.top=iY+'px';
		}else{
			iY=parseInt(e.style.top);
			if(isNaN(iY)){
				iY=0;
			}
		}
	}else if(css && xDef(e.style.pixelTop)){
		if(xNum(iY)){
			e.style.pixelTop=iY;
		}else{
			iY=e.style.pixelTop;
		}
	}
	return iY;
}

function xVisibility(e, bShow){
	if(!(e=xGetElementById(e))){
		return null;
	}
	if(e.style && xDef(e.style.visibility)){
		if(xDef(bShow)){
			e.style.visibility = bShow ? 'visible' : 'hidden';
		}
		return e.style.visibility;
	}
	return null;
}

function xWidth(e,w){
	if(!(e=xGetElementById(e))){
		return 0;
	}
	if(xNum(w)){
		if(w<0){
			w = 0;
		}else{
			w=Math.round(w);
		}
	}else{
		w=-1;var css=xDef(e.style);
	}
	if(e == document || e.tagName.toLowerCase() == 'html' || e.tagName.toLowerCase() == 'body'){
		w = xClientWidth();
	}else if(css && xDef(e.offsetWidth) && xStr(e.style.width)){
		if(w>=0){
			var pl=0,pr=0,bl=0,br=0;
			if(document.compatMode=='CSS1Compat'){
				var gcs = xGetComputedStyle;
				pl=gcs(e,'padding-left',1);
				if(pl !== null){
					pr=gcs(e,'padding-right',1);
					bl=gcs(e,'border-left-width',1);
					br=gcs(e,'border-right-width',1);
				}else if(xDef(e.offsetWidth,e.style.width)){
					e.style.width=w+'px';
					pl=e.offsetWidth-w;
				}
			}
			w-=(pl+pr+bl+br);
			if(isNaN(w)||w<0){
				return;
			}else{
				e.style.width=w+'px';
			}
		}
		w=e.offsetWidth;
	}else if(css && xDef(e.style.pixelWidth)){
		if(w>=0){
			e.style.pixelWidth=w;w=e.style.pixelWidth;
		}
	}
	return w;
}

function xZIndex(e,uZ){
	if(!(e=xGetElementById(e))){
		return 0;
	}
	if(e.style && xDef(e.style.zIndex)){
		if(xNum(uZ)){
			e.style.zIndex=uZ;
		}
		uZ=parseInt(e.style.zIndex);
	}
	return uZ;
}