var SC = new Object();

SC = {

	browser:function()

	{

		var ua, s, i;

		this.isIE = false;

		this.isNS = false;

		this.isOP = false;

		this.isSF = false;

		ua = navigator.userAgent.toLowerCase();

		s = "opera";

		if ((i = ua.indexOf(s)) >= 0) {

		  this.isOP = true;return;

		}

		s = "msie";

		if ((i = ua.indexOf(s)) >= 0) {

		  this.isIE = true;return;

		}

		s = "netscape6/";

		if ((i = ua.indexOf(s)) >= 0) {

		  this.isNS = true;return;

		}

		s = "gecko";

		if ((i = ua.indexOf(s)) >= 0) {

		  this.isNS = true;return;

		}

		s = "safari";

		if ((i = ua.indexOf(s)) >= 0) {

		  this.isSF = true;return;

		}

	},



	dialogLoc:function(w,h) {

		w = w || 0;

		h = h || 0;

		var dde = document.documentElement;

		if (window.innerWidth) {

		  var ww = window.innerWidth;

		  var wh = window.innerHeight;

		  var bgX = window.pageXOffset;

		  var bgY = window.pageYOffset;

		} else {

		  var ww = dde.offsetWidth;

		  var wh = dde.offsetHeight;

		  var bgX = dde.scrollLeft;

		  var bgY = dde.scrollTop;

		}

		bgX = (bgX + ((ww - w)/2));

		bgY = (bgY + ((wh - h)/2));

		return {left:bgX,top:bgY,widht:ww,height:wh};

	},



	dialogShow:function(obj,w,h) {

		if(typeof obj != 'object') obj = document.getElementById(obj);

		//本层的select不隐藏
		var objSelect = obj.getElementsByTagName("select");
		for (var i=0; i<objSelect.length; i++)
		{
			objSelect[i].style.visibility = "visible";
			objSelect[i].style.display = '';
		}

		w = w || parseInt(obj.style.width);

		h = h || parseInt(obj.style.height);

		this.dialogLoc(w,h).top;

		obj.style.top = this.dialogLoc(w,h).top + "px";

		obj.style.left = this.dialogLoc(w,h).left + "px";

		obj.style.position = "absolute";

		obj.style.zIndex = "1001";

		obj.style.display = "block";

	},



	screenConvert:function() {

		var browser = new this.browser();

		var objScreen = document.getElementById("ScreenOver");

		if(!objScreen)

		{

			var objScreen = document.createElement("div");

			document.body.appendChild(objScreen);

		}

		var oS = objScreen.style;

		objScreen.id = "ScreenOver";

		oS.display = "block";

		oS.top = oS.left = oS.margin = oS.padding = "0px";

		

		var ww = this.dialogLoc().width;

		var wh = this.dialogLoc().height;

		if (document.body.clientHeight) {

			if(wh > document.body.clientHeight)

			{

				if(browser.isIE)

					oS.height = wh - 4 + "px";

				else

					oS.height = wh + "px";

			}

			else

			{

				oS.height = document.body.clientHeight + "px";

			}

		} else {

			oS.height = "100%";

		}

		if (document.body.clientWidth) {

			if(ww > document.body.clientWidth)

			{

				oS.width = ww + "px";

			}

			else

			{

				oS.width = document.body.clientWidth + "px";

			}

		} else {

			oS.width = "100%";

		}

		oS.position = "absolute";

		oS.zIndex = "1000";

		if ((!browser.isSF) && (!browser.isOP)) {

			oS.background = "#181818";

		} else {

			oS.background = "#F0F0F0";

		}

		oS.filter = "alpha(opacity=40)";

		oS.opacity = 40/100;

		oS.MozOpacity = 40/100;

		if(parseInt(oS.width)< 794)
		{
			oS.width = '798px';
		}

		try

		{

			var allselect = document.getElementsByTagName("select");

			for (var i=0; i<allselect.length; i++)

			{

				allselect[i].style.visibility = "hidden";

				allselect[i].style.display = 'none';

			}

		}catch(e){}

	},

	screenClean:function(){

		var objScreen = document.getElementById("ScreenOver");
		if (objScreen) 
		{
			objScreen.style.display = "none";
			if(window.parent.document.getElementById("ScreenOver"))window.parent.document.getElementById("ScreenOver").style.display = "none";
		}
		else
		{
			if(window.parent.document.getElementById("ScreenOver"))
				window.parent.document.getElementById("ScreenOver").style.display = "none";				
		}
		try

		{

			var allselect = document.getElementsByTagName("select");
			for (var i=0; i<allselect.length; i++)
			{
				allselect[i].style.visibility = "visible";
				allselect[i].style.display = '';
			}
			//iframe
			var iframeselect = window.parent.document.getElementsByTagName("select");
			for (var i=0; i<iframeselect.length; i++)
			{
				iframeselect[i].style.visibility = "visible";
				iframeselect[i].style.display = '';
			}

		}catch(e){}

	},

	

	show:function(obj,w,h)

	{

	   this.screenConvert();

	   this.dialogShow(obj,w,h);

	},



	close:function(obj)

	{

		this.screenClean();

		var objDialog = document.getElementById(obj);
		
		if (objDialog) 
			objDialog.style.display = "none";
		else
		{
			if(window.parent.document.getElementById(obj))
				window.parent.document.getElementById(obj).style.display = "none";
		}
	}

}