var http = "http://www.yisence.net";
var author = "wuhuihui";

var linkPath = "";
thisUrl = location.href;
if((thisUrl.indexOf("/blog")!=-1)||(thisUrl.indexOf("/article")!=-1)){
    linkPath = "../";
}   

/**
 * 类别
 */
var classArray = new Array();
function Class(cId,refCId,name,description){
	this.cId = cId;
	this.refCId = refCId;
	this.name = name;
	this.description = description;
}

function classList(cId,refCId,name,description){
	classArray = classArray.concat(new Class(cId,refCId,name,description));
}

function substring(input,startPos,lastPos){
	//alert(input + " -- " + startPos + " -- " + lastPos);
	if(input == null){
		return "";
	}
	if(lastPos == null){
		return input.substring(startPos);
	}
	else{
		return input.substring(startPos,lastPos);
	}
}

/**
 * Archives
 */
var archivesArray = new Array();
function Archives(archivesDate){
	archivesArray = archivesArray.concat(archivesDate);
}

/**
 * Action 
 */
function Action(actionHeader,param,frame){
	if(frame==null){
		window.location.href=actionHeader+param;
	}
	else{
		frame.location.href=actionHeader+param;
	}
}

function XMLAction(actionHeader,paramControl,sig){
	window.location.href=actionHeader+"data="+Base64("encode", paramControl)+"&sig="+sig;
}


/** 
 * 隐藏和查看
 * type=1 : 显示
 * type=0 : 隐藏
 */
function showArea(type,areaTag){
	if("1"==type){
		document.getElementById(areaTag).style.display="block";
	}
	else{
		document.getElementById(areaTag).style.display="none";
	}
}	

/****************************************----  Common  ---****************************************/

function QuickSort(arr) { //交换排序->快速排序
	if (arguments.length>1) {
		var low = arguments[1];
		var high = arguments[2];
	} else {
		var low = 0;
		var high = arr.length-1;
	}
	if(low < high){
		// function Partition
		var i = low;
		var j = high;
		var pivot = arr[i];
		while(i<j) {
			while(i<j && arr[j]>=pivot)
				j--;
			if(i<j)
				arr[i++] = arr[j];
			while(i<j && arr[i]<=pivot)
				i++;
			if(i<j)
				arr[j--] = arr[i];
		}//endwhile
		arr[i] = pivot;
		// end function
		var pivotpos = i; //Partition(arr，low，high);
		QuickSort(arr, low, pivotpos-1);
		QuickSort(arr, pivotpos+1, high);
	} else
		 return;
	return arr;
}

function Map(){
	this.elements=new Array();
	// Map's size
	this.size=function(){
		return this.elements.length;
	}
	// put key-value to the Array
	this.put=function(_key,_value){
		// check elements is exist _key
		var bln = false;
		for (i=0;i<this.elements.length;i++){
			if (this.elements[i].key==_key){
				bln=true;
			}
		}
		if(!bln){
			this.elements.push({key:_key,value:_value});
		}
	}
	// remove the element 
	this.remove=function(_key){
		var bln=false;
		try{
			for (i=0;i<this.elements.length;i++){
				if (this.elements[i].key==_key){
					this.elements.splice(i,1);
					return true;
				}
			}
		}
		catch(e){
			bln=false;
		}
		return bln;
	}
	// check the array is Exist _key
	this.containsKey=function(_key){
		var bln=false;
		try{
			for (i=0;i<this.elements.length;i++){
				if (this.elements[i].key==_key){
					bln=true;
				}
			}
		}
		catch(e){
			bln=false;
		}
		return bln;
	}
	// get Element's object
	this.get=function(_key){
		try{
			for (i=0;i<this.elements.length;i++){
				if (this.elements[i].key==_key){
					return this.elements[i];
				}
			}
		}
		catch(e){
			return null;
		}
	}

	// 
	this.elementArr = function(){
		return this.elements;
	}
}

// BASE64 加密和解密算法
var Base64 = function(secType,str){
	var base64EncodeChars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
	var base64DecodeChars = new Array(
		-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
		-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
		-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 62, -1, -1, -1, 63,
		52, 53, 54, 55, 56, 57, 58, 59, 60, 61, -1, -1, -1, -1, -1, -1,
		-1,  0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 14,
		15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, -1, -1, -1, -1, -1,
		-1, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40,
		41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, -1, -1, -1, -1, -1);

	function encode(str) {
		var out, i, len;
		var c1, c2, c3;

		len = str.length;
		i = 0;
		out = "";
		while(i < len) {
		c1 = str.charCodeAt(i++) & 0xff;
		if(i == len)
		{
			out += base64EncodeChars.charAt(c1 >> 2);
			out += base64EncodeChars.charAt((c1 & 0x3) << 4);
			out += "==";
			break;
		}
		c2 = str.charCodeAt(i++);
		if(i == len)
		{
			out += base64EncodeChars.charAt(c1 >> 2);
			out += base64EncodeChars.charAt(((c1 & 0x3)<< 4) | ((c2 & 0xF0) >> 4));
			out += base64EncodeChars.charAt((c2 & 0xF) << 2);
			out += "=";
			break;
		}
		c3 = str.charCodeAt(i++);
		out += base64EncodeChars.charAt(c1 >> 2);
		out += base64EncodeChars.charAt(((c1 & 0x3)<< 4) | ((c2 & 0xF0) >> 4));
		out += base64EncodeChars.charAt(((c2 & 0xF) << 2) | ((c3 & 0xC0) >>6));
		out += base64EncodeChars.charAt(c3 & 0x3F);
		}
		return out;
	}

	function decode(str) {
		var c1, c2, c3, c4;
		var i, len, out;

		len = str.length;
		i = 0;
		out = "";
		while(i < len) {
		/* c1 */
		do {
			c1 = base64DecodeChars[str.charCodeAt(i++) & 0xff];
		} while(i < len && c1 == -1);
		if(c1 == -1)
			break;

		/* c2 */
		do {
			c2 = base64DecodeChars[str.charCodeAt(i++) & 0xff];
		} while(i < len && c2 == -1);
		if(c2 == -1)
			break;

		out += String.fromCharCode((c1 << 2) | ((c2 & 0x30) >> 4));

		/* c3 */
		do {
			c3 = str.charCodeAt(i++) & 0xff;
			if(c3 == 61)
			return out;
			c3 = base64DecodeChars[c3];
		} while(i < len && c3 == -1);
		if(c3 == -1)
			break;

		out += String.fromCharCode(((c2 & 0XF) << 4) | ((c3 & 0x3C) >> 2));

		/* c4 */
		do {
			c4 = str.charCodeAt(i++) & 0xff;
			if(c4 == 61)
			return out;
			c4 = base64DecodeChars[c4];
		} while(i < len && c4 == -1);
		if(c4 == -1)
			break;
		out += String.fromCharCode(((c3 & 0x03) << 6) | c4);
		}
		return out;
	}

	function utf16to8(str) {
		var out, i, len, c;

		out = "";
		len = str.length;
		for(i = 0; i < len; i++) {
		c = str.charCodeAt(i);
		if ((c >= 0x0001) && (c <= 0x007F)) {
			out += str.charAt(i);
		} else if (c > 0x07FF) {
			out += String.fromCharCode(0xE0 | ((c >> 12) & 0x0F));
			out += String.fromCharCode(0x80 | ((c >>  6) & 0x3F));
			out += String.fromCharCode(0x80 | ((c >>  0) & 0x3F));
		} else {
			out += String.fromCharCode(0xC0 | ((c >>  6) & 0x1F));
			out += String.fromCharCode(0x80 | ((c >>  0) & 0x3F));
		}
		}
		return out;
	}

	function utf8to16(str) {
		var out, i, len, c;
		var char2, char3;

		out = "";
		len = str.length;
		i = 0;
		while(i < len) {
			c = str.charCodeAt(i++);
			switch(c >> 4)
			{ 
			  case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7:
				// 0xxxxxxx
				out += str.charAt(i-1);
				break;
			  case 12: case 13:
				// 110x xxxx   10xx xxxx
				char2 = str.charCodeAt(i++);
				out += String.fromCharCode(((c & 0x1F) << 6) | (char2 & 0x3F));
				break;
			  case 14:
				// 1110 xxxx  10xx xxxx  10xx xxxx
				char2 = str.charCodeAt(i++);
				char3 = str.charCodeAt(i++);
				out += String.fromCharCode(((c & 0x0F) << 12) |
							   ((char2 & 0x3F) << 6) |
							   ((char3 & 0x3F) << 0));
				break;
			}
		}
		return out;
	}
	// encode
	if(secType=="encode"){
		return encode(str);
	}
	else{
		return decode(str);
	}
	//  f.output.value = base64encode(utf16to8(f.source.value))
    //	f.decode.value = utf8to16(base64decode(f.output.value))
}

/*图片半透明渐变效果*/
nereidFadeObjects = new Object();
nereidFadeTimers = new Object();
function nereidFade(object, destOp, rate, delta){
if (!document.all)
return
    if (object != "[object]"){  //do this so I can take a string too
        setTimeout("nereidFade("+object+","+destOp+","+rate+","+delta+")",0);
        return;
    }
    clearTimeout(nereidFadeTimers[object.sourceIndex]);
    diff = destOp-object.filters.alpha.opacity;
    direction = 1;
    if (object.filters.alpha.opacity > destOp){
        direction = -1;
    }
    delta=Math.min(direction*diff,delta);
    object.filters.alpha.opacity+=direction*delta;
    if (object.filters.alpha.opacity != destOp){
        nereidFadeObjects[object.sourceIndex]=object;
        nereidFadeTimers[object.sourceIndex]=setTimeout("nereidFade(nereidFadeObjects["+object.sourceIndex+"],"+destOp+","+rate+","+delta+")",rate);
    }
}
/**返回中文字体的个数
String.prototype.trueLength=function()   
{   
	  return this.replace(/[^\x00-\xff]/g,"**").length;   
} 
*/  

	function DrawImage(ImgD)
	{
		var image=new Image();
		var iwidth = 200; //定义允许图片宽度
		var iheight = 90; //定义允许图片高度
		image.src=ImgD.src;
		
		if(image.width>0 && image.height>0)
		{
			flag=true;
			if(image.width/image.height>= iwidth/iheight)
			{
				if(image.width>iwidth)
				{ 
					ImgD.width=iwidth;
					ImgD.height=(image.height*iwidth)/image.width;
				}
				else
				{
					ImgD.width=image.width; 
					ImgD.height=image.height;
				}

				ImgD.alt=image.width+"×"+image.height;
			}
			else
			{
				if(image.height>iheight)
				{ 
					ImgD.height=iheight;
					ImgD.width=(image.width*iheight)/image.height; 
				}
				else
				{
					ImgD.width=image.width; 
					ImgD.height=image.height;
				}
				ImgD.alt=image.width+"×"+image.height;
			}
		}
	}