var is_regexp = (window.RegExp) ? true : false;
var sAgent = navigator.userAgent.toLowerCase() ;

var BrowserInfo = new Object() ;
BrowserInfo.IsIE			= ( sAgent.indexOf("msie") != -1 ) ;
BrowserInfo.IsGecko		= !BrowserInfo.IsIE ;
BrowserInfo.IsSafari		= ( sAgent.indexOf("safari") != -1 );
BrowserInfo.IsNetscape	= ( sAgent.indexOf("netscape") != -1 ) ;

var ISS = new Object();

ISS.F = function() {
	var elements = new Array();

	for (var i = 0; i < arguments.length; i++) {
		var element = arguments[i];
		if (typeof element == 'string')
		element = document.getElementById(element);

		if (arguments.length == 1)
		return element;

		elements.push(element);
	}

	return elements;
}


ISS.$ = function(n, d) { //v4.01
	var p,i,x;
	if(!d) d=document;
	if((p=n.indexOf("?"))>0&&parent.frames.length) {
		d=parent.frames[n.substring(p+1)].document;
		n=n.substring(0,p);
	}
	if(!(x=d[n])&&d.all) x=d.all[n];
	for (i=0;!x&&i<d.forms.length;i++)
	x=d.forms[i][n];
	for(i=0;!x&&d.layers&&i<d.layers.length;i++)
	x=ISS.$(n,d.layers[i].document);
	if(!x && d.getElementById) x=d.getElementById(n);
	return x;
}

ISS.addClassName = function(element, className){
	if (!(element = this.F(element))) return;
	pattern = new RegExp('\\b'+ className+'\\b','i');
	if(element.className.search(pattern) == -1){
		element.className += ' '+className;
	}
}

ISS.removeClassName = function(element, className){
	if (!(element = ISS.F(element))) return;
	pattern = new RegExp('\\b'+ className+'\\b','i');
	if(element.className.search(pattern) != -1){
		element.className = element.className.replace(pattern,' ');
	}
}


ISS.openWindow = function(sUrl,sName,iWidth,iHeight,scroolbars){

	iLeft=(screen.height-iHeight)/2;
	iTop=(screen.width-iWidth)/2;

	var sOptions = "toolbar=no,status=no,resizable=yes,dependent=yes,scrollbars=1" ;
	sOptions += ",width=" + iWidth;
	sOptions += ",height=" + iHeight;
	sOptions += ",left=" + iLeft;
	sOptions += ",top=" + iTop;

	var oWindow = window.open( sUrl,sName, sOptions ) ;

	if (BrowserInfo.IsIE)
	{
		// The following change has been made otherwise IE will open the file
		// browser on a different server session (on some cases):
		// http://support.microsoft.com/default.aspx?scid=kb;en-us;831678
		// by Simone Chiaretta.
		oWindow.opener = window ;
	}

	return oWindow;
}

/**
* listbox redirection
*/
ISS.jumpSelectMenu = function(targ,selObj){
	if(selObj.options[selObj.selectedIndex].value!='')
	eval(targ+".location='"+selObj.options[selObj.selectedIndex].value+"'");

}

/**
 * tooggle a collapse area
 */
ISS.toggle_collapse  = function(objid){
	if (!is_regexp)
	{
		return false;
	}

	obj = ISS.$("collapseobj_" + objid);
	but = ISS.$("collapsebutton_" + objid);
	cel = ISS.$("collapsecel_" + objid);

	if (!obj)
	{
		// nothing to collapse!
		if (but)
		{
			// hide the clicky image if there is one
			but.style.display = "none";
		}
		return false;
	}

	if (obj.style.display == "none")
	{
		obj.style.display = "";
		//save_collapsed(objid, false);
		if (but)
		{
			but.className = but.className.replace(/^(.+)(_collapsed)$/, '$1');
		}
		if (cel)
		{
			cel.className = cel.className.replace(/^(.+)(_collapsed)$/, '$1');
		}
	}
	else
	{
		obj.style.display = "none";
		//save_collapsed(objid, true);
		if (but)
		{
			but.className = but.className.replace(/^(.+)$/, '$1_collapsed');
		}
		if (cel)
		{
			cel.className = cel.className.replace(/^(.+)$/, '$1_collapsed');
		}
	}
	return false;
}

ISS.submitForm = function(form,paramName,paramValue){
	oF = ISS.$(form);

	if(oF.tagName=='FORM'){
		if(paramName){
			oTag = document.createElement('input');
			oF.appendChild(oTag);
			oTag.name = paramName;
			oTag.value = paramValue;
			oF.submit();
			oF.removeChild(oTag);
		}else{
			oF.submit();
		}
	}else{

	}
}

ISS.getBackGroudIframe = function(){
	if(oIframe = window.frames["__backgroud__"]){
		return oIframe;
	}else{
		if(BrowserInfo.IsIE){
			oIframe = document.createElement("<iframe name='__backgroud__'>");
		}else{
			oIframe = document.createElement("iframe");
			oIframe.name = "__backgroud__";
		}
		document.body.appendChild(oIframe);
		oIframe.width = '0px';
		oIframe.height = '0px';
		oIframe.frameBorder = 0;
		oIframe.src = 'about:blank';
		return oIframe;
	}
}

ISS.submitForm_background = function(formName,param){
	oIframe = ISS.getBackGroudIframe();
	if(document.attachEvent)
	oIframe.attachEvent("onload",this.onLoadBackgroudSubmit);
	if(document.addEventListener)
	oIframe.addEventListener("load",this.onLoadBackgroudSubmit,false);

	oF = ISS.$(formName);
	target = oF.target;
	oF.target = oIframe.name;
	oTag = document.createElement('input');
	oF.appendChild(oTag);
	oTag.name = "__backgroud_tag_";
	oTag.value = "";
	//oTag.type = "hidden";
	oF.submit();
	oF.removeChild(oTag);
	oF.target = target;
}

ISS.onLoadBackgroudSubmit = function(){
	var oF = window.frames["__backgroud__"];
	if(BrowserInfo.IsIE){
		oF.detachEvent("onload",ISS.onLoadBackgroudSubmit);
		alert(oF.document.body.innerHTML);
	}else{
		try{
			oF.removeEventListener("load",this.onLoadBackgroudSubmit,false);
		}finally{
			alert(oF.document.body.innerHTML);
		}
	}
}

ISS.showOrHidden = function(sObjectID,show){
	obj = ISS.$(sObjectID);
	if(obj){
		if(show){
			obj.style.display = "";
		}else{
			obj.style.display = "none";
		}
	}
}

ISS.CheckAll = function(sAttributeName,bChecked){
	oCols = document.getElementsByTagName('input');
	for(i=0;i<oCols.length;i++){
		if(oCols[i].type == 'checkbox' && oCols[i].getAttribute(sAttributeName)){
			try{
				oCols[i].checked = bChecked;
			}catch(e){
			}
		}
	}
}



ISS.autoScroll_objs = new Object();

ISS.autoScroll_contrl = function(sName){
	os = ISS.autoScroll_objs[sName];

	if(os.bPause){
		//alert(os.Block.scrollHeight+'|offset:'+os.Block.offsetHeight);
		return;
	}

	if(os.sDirection == 'up'){
		if(!os.Checked){
			if(os.Content1.scrollHeight < os.Block.offsetHeight){
				//alert('scrollHeight:'+os.Block.scrollHeight+'|offset:'+os.Block.offsetHeight+'|height_sub:'+os.Content1.scrollHeight);
				os.Content1.style.height = os.Block.offsetHeight+'px';
				os.Content2.style.height = os.Block.offsetHeight+'px';
			}
			os.Checked = true;
		}
		if(os.Block.scrollTop + os.Block.offsetHeight >= os.Block.scrollHeight){ //当整个滚动区滚动的结尾时
			os.Block.scrollTop = 0;	//倒回到开头
		}else if(os.Block.scrollTop >= os.Content1.offsetHeight){	//当Content1全部滚出显示区时
			os.Block.scrollTop -= os.Content1.offsetHeight;		//倒退一个Content1的高度
		}else{
			os.Block.scrollTop += os.iStep;
		}
	}else if(os.sDirection == 'down'){
		if(!os.Checked){
			if(os.Content1.scrollHeight < os.Block.offsetHeight){
				//alert('scrollHeight:'+os.Block.scrollHeight+'|offset:'+os.Block.offsetHeight+'|height_sub:'+os.Content1.scrollHeight);
				os.Content1.style.height = os.Block.offsetHeight+'px';
				os.Content2.style.height = os.Block.offsetHeight+'px';
			}
			os.Checked = true;
		}
		if(os.Block.scrollTop <= 0 ){ //当整个滚动区滚动的结尾时
			os.Block.scrollTop = os.Block.scrollHeight;	//倒回到开头
		}else if((os.Block.scrollHeight -(os.Block.scrollTop + os.Block.offsetHeight)) >= os.Content2.offsetHeight){	//当Content2全部滚出显示区时
			os.Block.scrollTop += os.Content2.offsetHeight;		//倒退一个Content2的高度
		}else{
			os.Block.scrollTop -= os.iStep;
		}		
	}else if(os.sDirection == 'left'){
		if(!os.Checked){
			if(os.Content1.scrollWidth < os.Block.offsetWidth){
				os.Content1.style.width = os.Block.offsetWidth+'px';
			}
			if(os.Content2.scrollWidth < os.Block.offsetWidth){
				os.Content2.style.width = os.Block.offsetWidth+'px';
			}
			os.Checked = true;
		}
		if(os.Block.scrollLeft + os.Block.offsetWidth>=os.Block.scrollWidth ){ //当整个滚动区滚动的结尾时
			os.Block.scrollLeft = 0;	//倒回到开头
		}else if(os.Block.scrollLeft >= os.Content1.offsetWidth){	//当Content1全部滚出显示区时
			os.Block.scrollLeft-=os.Content1.offsetWidth;		//倒退一个Content1的宽度
		}else{
			os.Block.scrollLeft += os.iStep;
		}
	}else if(os.sDirection == 'right'){
		if(!os.Checked){
			if(os.Content1.scrollWidth < os.Block.offsetWidth){
				os.Content1.style.width = os.Block.offsetWidth+'px';
			}
			if(os.Content2.scrollWidth < os.Block.offsetWidth){
				os.Content2.style.width = os.Block.offsetWidth+'px';
			}
			os.Checked = true;
		}
		if(os.Block.scrollLeft <= 0){ //当整个滚动区滚动的结尾时
			os.Block.scrollLeft = os.Block.scrollWidth;	//倒回到开头
		}else if((os.Block.scrollWidth -(os.Block.scrollLeft+os.Block.offsetWidth)) >= os.Content2.offsetWidth){	//当Content2全部滚出显示区时
			os.Block.scrollLeft+=os.Content2.offsetWidth;		//倒退一个Content2的宽度
		}else{
			os.Block.scrollLeft -= os.iStep;
		}
	}else{		
		os.bPause = true;
	}
}

ISS.autoScroll = function(sName,sDirection,sStyle,iSpeed,iStep){
	ISS.autoScroll_objs[sName] = new Object();
	os = ISS.autoScroll_objs[sName];


	os.sName = sName;
	os.bPause = false;
	os.iSpeed = iSpeed;
	os.iStep = iStep;
	os.sDirection = sDirection;
	os.sStyle = sStyle;	

	os.Block = ISS.$(sName);
	os.Content1 = ISS.$(sName+'_1');
	os.Content2 = ISS.$(sName+'_2');

	os.Block.onmouseover=function(){ISS.autoScroll_objs[sName].bPause = true;}
	os.Block.onmouseout=function() {ISS.autoScroll_objs[sName].bPause = false;}
	
	os.Content2.innerHTML = 	os.Content1.innerHTML;
	//alert("ISS.autoScroll_contrl('"+sName+")");
	setInterval("ISS.autoScroll_contrl('"+sName+"')",iSpeed);

}