eforumad.js

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//广告项对象
function getBrowserObj(){
  var browserObj;
  if (document.documentElement) {
    browserObj = document.documentElement;
  }
  else if (document.body) {
    browserObj =  document.body;
  }
  return browserObj;
}

function ADItemObj(){
	this.id = 0;
	this.type = 1;
	this.resHeight = 100 ;
	this.resWidth = 100 ; 
	this.hint = "" ; 
	this.resURL = "" ; 
	this.linkURL = "";	
	this.power =1 ;
  this.transparent = "0";

	this.getHtml = getADItemHTML;
}

//产生显示使用的HTML
function getADItemHTML(){
	var str = "";
	var name = "ad_" + this.id;

	switch(this.type) {
		case 1: //图片
			str = "<A TARGET='_blank' HREF='"+this.linkURL+"'><IMG ID='"+name+"' NAME='"+name+"' BORDER=0 HEIGHT=" ;
			str+=  this.resHeight + " WIDTH="+ this.resWidth + " SRC='" 	+ this.resURL + "' title='" + this.hint + "' ALT='" +this.hint+ "'></A>" 
			break;
		case 2: //flash
			str ="<object classid='clsid:D27CDB6E-AE6D-11cf-96B8-444553540000'  codebase='http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=7,0,0,0' ";
			str+=" name='"+ name +"' id='"+name+"'  width='" + this.resWidth + "' 	height='"+ this.resHeight+ "'>";
			str+="<param name='movie' value='"+this.resURL+ "'>";
      if(this.transparent == "1"){
			  str+="<param name='wmode' value='Transparent'>";
      }
			str+="<param name='quality' value='autohigh'>";
			str+="<embed name='"+ name +" id='"+name+"'  width='" + this.resWidth + "' height='"+ this.resHeight+ "' src='"+this.resURL+"'";
      if(this.transparent == "1"){
        str+=" wmode='Transparent'" ;
      }
			str+=" quality='autohigh' pluginspage='http://www.macromedia.com/shockwave/download/index.cgi?P1_Prod_Version=ShockwaveFlash' type='application/x-shockwave-flash'></embed>";
			str+="</object>" ;
			break;
		case 3: //html文本；
		case 4: //代码；
			str = this.resURL;
			break;
		case 5: //页面
			str ="<IFRAME FRAMEBORDER=0 SCROLLING=NO FRAMESPACING=0 MAGINWIDTH=0 MARGINHEIGHT=0 HEIGHT=";
			str+=  this.resHeight + " WIDTH="+ this.resWidth + " SRC='" 	+ this.resURL +"'></IFRAME>"; 
	}
//document.write(str);

	return str;
}


//广告浮动块
function ADFloatDIV(id) {
	this.ID = id;
	this.divName="";
	this.status = true; 
	this.virgin = true;
	
	this.adItems = new Array();
	this.currentAD = null;
	this.htmlDIV = null;
	this.floatType = 1;

	this.divWidth = 100;
	this.divHeight = 100;
	
	this.left =  -1;
	this.top =  -1;
	
	this.dx = 2 *(  Math.random() > 0.5 ? 1 :-1);
	this.dy = 1 *(  Math.random() > 0.5 ? 1 :-1);
	this.counter=0;
  this.timer = null;

	this.step = 1 ; 
	this.rate = 10 ; 
	this.delay = 3000;

	this.setADItem = Float_setADItem;
	this.adStart = adStart;
	this.showDIV= Float_showDIV;
	this.floatDIV = Float_floatDIV;
	this.pauseMove=Float_pauseMove;
	this.continueMove=Float_continueMove;
	this.divInvisible = Float_invisible;
	this.getCurrentAD = getRandomObj;
	this.initDiv = FLoat_InitDiv;
	this.popWindow = pop_window;
}

function adStart() {
	if ( this.floatType  <= 10 ) {
		this.showDIV();
  } else if ( this.floatType > 10 )  {
		this.popWindow();
	}
}

function FLoat_InitDiv() {
	if( this.virgin == false )  return;
	this.virgin = false;
	var browserObj = getBrowserObj();
	//匀速漂移 ---变速漂移
	if ( this.floatType == 1 || this.floatType == 2 || this.floatType ==3 || this.floatType == 4) {
		if( this.left < 0 ) {
  		this.left = 500 +  500 * Math.random() * ( Math.random() > 0.5 ? 1 :-1)  ;
		}
		if( this.top < 0 ) {
			this.top = 300 +  300 * Math.random() * ( Math.random() > 0.5 ? 1 :-1) ;
		}
	//
	//中央投影,随屏滚动。
  } else if (this.floatType== 5 || this.floatType == 6 || this.floatType == 7 || this.floatType == 8 || this.floatType == 9) {
		if( this.left == -1 ) {
  		this.left = ( browserObj.offsetWidth-this.divWidth -22) / 2 ; 
		} else if( this.left == -2 ) {
			this.left = browserObj.offsetWidth - this.divWidth - 22 ;
		} 
		if( this.top == -1 ) {
			this.top = ( browserObj.offsetHeight-this.divHeight - this.dy) / 2  ;
		} else if (this.top == -2 ) {
			this.top = browserObj.offsetHeight - this.divHeight - this.dy*2  ;
		} 
	}
	 if (this.left >  (browserObj.offsetWidth - this.divWidth -22)) {
			this.left = (browserObj.offsetWidth - this.divWidth -22) / window.screen.width * this.left;
			if (this.left >  (browserObj.offsetWidth - this.divWidth -22)) {
				this.left = (browserObj.offsetWidth - this.divWidth -22) ;
			}			
	  }
		if (this.top >  ( browserObj.offsetHeight - this.divHeight - this.dy*2)) {
			this.top = ( browserObj.offsetHeight - this.divHeight - this.dy*2 ) / window.screen.width * this.top ;
			if (this.top >  ( browserObj.offsetHeight - this.divHeight - this.dy*2)) {
				this.top = ( browserObj.offsetHeight - this.divHeight - this.dy*2 ) ;
			}
		}
}

//显示DIV，并在屏幕浮动。
function Float_floatDIV() {
  var browserObj = getBrowserObj();
  screenX=browserObj.scrollLeft;
  screenY=browserObj.scrollTop;
  screenW=browserObj.clientWidth-this.divWidth - 22;
  screenH=browserObj.clientHeight-this.divHeight - this.dy*2 ;

  this.initDiv();
	var theLeft , theTop ;
	//匀速漂移
	if ( this.floatType == 1 ) {
		theLeft = this.left + this.dx * this.step 
		theTop = this.top + this.dy * this.step  ;
		if( ( theLeft >= screenW && this.dx> 0 ) || ( theLeft <=0 &&  this.dx <0 ))      this.dx= -1 * this.dx ;
		if( ( theTop >= screenH &&  this.dy >0  ) || ( theTop <= 0 && this.dy <0 )) 	   this.dy= -1 * this.dy ;
	//变速漂移
	} else if ( this.floatType == 2) 	{
		if( this.counter >= ( 200 / this.rate )) {
			this.dx = ( this.dx > 0 ? 1 : -1 ) * Math.random() * 5; 
			this.dy = ( this.dy > 0 ? 1 : -1 ) * Math.random() * 5 ;
			this.counter = 0 ; 
		}
		this.counter+=1 ;
		theLeft = this.left ; 
		theTop = this.top + this.dy * this.step  ;
		if( ( theLeft >= screenW && this.dx> 0 ) || ( theLeft <=0 &&  this.dx <0 ))      this.dx= -1 * this.dx ;
		if( ( theTop >= screenH &&  this.dy >0  ) || ( theTop <= 0 && this.dy <0 )) 	   this.dy= -1 * this.dy ;
	//垂直上下
	} else if( this.floatType == 3 )	{
		this.dx=0;
		theLeft = this.left + this.dx * this.step 
		theTop = this.top + this.dy * this.step  ;
		if( ( theLeft >= screenW ) || ( theLeft <=0 ))    {   this.left = this.left + this.currentAD.resWidth; }
		if( ( theTop >= screenH &&  this.dy >0  ) || ( theTop <= 0 && this.dy <0 )) 	   this.dy= -1 * this.dy ;

	//水平滚动。
	} else if( this.floatType ==4 )	{
		this.dy=0;
		theLeft = this.left + this.dx * this.step 
		theTop = this.top + this.dy * this.step  ;
		//if( ( theLeft >= screenW ) || ( theLeft <=0 ))    {   this.left = this.left + this.currentAD.resWidth; }
		if( ( theLeft >= screenW &&  this.dx >0  ) || ( theTop <= 0 && this.dy <0 )) 	   this.dx= -1 * this.dx ;

	//随屏滚动_中间。
	} else if( this.floatType== 5 ) {
		//this.dx = 0;
		//this.dy = 0;
		//this.left = screenW  ; 
		//this.top = screenH  ; 
    this.left = 0;
    this.top = (screenH / 2);
	//中央投影
  } else if(this.floatType== 7 ) {
    this.left = 0;
    this.top = (screenH / 2);
	//随屏滚动_右边_中间。
	} else if(this.floatType== 8 ) {
    this.left = screenW;
    this.top = (screenH / 2);
  // 屏幕右下角.
  }else if(this.floatType== 9 ) {
    this.left = screenW;
    this.top = screenH - 15;
  } else if (this.floatType == 6) {
  	this.htmlDIV.style.left= this.left;
		this.htmlDIV.style.top= this.top; 
		this.htmlDIV.timer=setTimeout( this.ID +".divInvisible()",this.delay);
		return ; 
	//随屏滚动_左边_中间。
	} 
  this.left = this.left + this.dx * this.step ;
	this.top = this.top + this.dy * this.step  ;
  this.htmlDIV.style.left = this.left  + screenX + "px";
  this.htmlDIV.style.top=this.top  + screenY + "px";
  var	delay = 80 / this.rate;
  this.htmlDIV.timer=setTimeout( this.ID +".floatDIV()",delay);
}


//得到整个块的显示使用的HTML。
function Float_showDIV() {
	this.currentAD = this.getCurrentAD(this.adItems);
	this.divHeight =	this.currentAD.resHeight; 
	this.divWidth = this.currentAD.resWidth ;

	//为空不显示。
	if( this.currentAD == null || this.currentAD=="") return ; 
	this.divName = "ADF_" + this.ID;
	this.divHeight = this.divHeight+22;
 	var str = "<DIV id='"+ this.divName + "' onMouseOver='" + this.ID+".pauseMove()' onMouseOut='" +this.ID+ ".continueMove()"  ;
	str += "' STYLE='position:absolute; visibility:visible; z-index:1; width:" ;
	str	+= this.divWidth + "px; height:" + this.divHeight + "px; left:" + this.left+ ";top:" + this.top + "'>";
	str += this.currentAD.getHtml();
	str += "<DIV STYLE='width:100%;background-color:#ECECEC;text-align:right;'><span STYLE='font-size:12px; line-height:1.5;' ><A onclick='"+this.ID+".divInvisible();' style='text-decoration:none;color:#000;cursor:pointer'>关闭</A>&nbsp;</span>";
	str +="</DIV></DIV>";

	document.write(str);
	this.htmlDIV = document.getElementById(this.divName);
	this.floatDIV();
}

function Float_pauseMove() {
	clearTimeout(this.htmlDIV.timer)
}


function Float_continueMove() {
	if( this.status )	this.floatDIV();
}

//设置当前广告项。
function Float_setADItem(ItemObj) {
	 var thisLine = this.adItems.length;
	 this.adItems[thisLine] = new Array( ItemObj , ItemObj.power);
}

// 去掉显示。
function Float_invisible() {
		clearTimeout(this.htmlDIV.timer)
		this.htmlDIV.style.visibility="hidden";
		this.status = false;
}


//弹出窗口。
function pop_window() {
}

function getRandomObj( array ){
	var totalPower = 0 ; 
	var start = 0 ; 
	for( ii = 0 ; ii < array.length ; ii++) {
		totalPower += array[ii][1];
		array[ii][2] = start;
		array[ii][3] = start + array[ii][1];
		start = array[ii][3];
	}
	var theSelected = Math.random() * totalPower ; 	

	var counter = 0 ; 
	for( ii = 0 ; ii< array.length ; ii++ ) {
		if( theSelected > array[ii][2] && theSelected < array[ii][3] ) {
		   return array[ii][0];
		}
	} //end for
}

//静态广告信息块
function staticADDIV(id) {
	this.ID = id;
	this.adItems = new Array();
	this.currentAD = null;
  this.setADItem = static_setADItem;
	this.setHtml = positionADHTML;
	this.getCurrentAD = getRandomObj;
}

function positionADHTML(divName) {
  var divObj = document.getElementById( divName);
 	this.currentAD = this.getCurrentAD(this.adItems);
	var str = this.currentAD.getHtml();
	//alert(str);
	divObj.innerHTML  =  str;
}

//设置当前广告项。
function static_setADItem(ItemObj) {
	 var thisLine = this.adItems.length;
	 this.adItems[thisLine] = new Array( ItemObj , ItemObj.power);
}


//多图片变化显示;
function ADPicsItemObj(){
  this.pigSrcs=new Array();
  this.picLink=new Array();
  this.picHint=new Array();
  this.adNumPic=0;
  this.target="_blank";
  this.imgId = "";
}

//下一个图片
function picItemNextAd(adPicsItemObj){
  if(adPicsItemObj.adNumPic<adPicsItemObj.pigSrcs.length-1){
    adPicsItemObj.adNumPic++ ;
  }else{ 
    adPicsItemObj.adNumPic=0;
  }
  picItemSet(adPicsItemObj);
  document.getElementById(adPicsItemObj.imgId).src=adPicsItemObj.pigSrcs[adPicsItemObj.adNumPic];
  picItemPlayCo(adPicsItemObj);
}

function picItemSet(adPicsItemObj){   
  document.getElementById(adPicsItemObj.imgId).filters.revealTrans.Transition=Math.floor(Math.random()*23);
  document.getElementById(adPicsItemObj.imgId).filters.revealTrans.apply();
}

function picItemPlayCo(adPicsItemObj){   
  document.getElementById(adPicsItemObj.imgId).filters.revealTrans.play();
}

//图片链接;
function picItemLinkUrl(adPicsItemObj){
    jumpUrl=adPicsItemObj.picLink[adPicsItemObj.adNumPic];
    if (jumpUrl != ''){      
      if (adPicsItemObj.target == '_blank'){
        window.open(jumpUrl,'_blank');
      }else{
        location.href=jumpUrl;
      }
    }
}

//在浏览器底部状态栏显示Msg;
function picImteListMsg(adPicsItemObj){
  status=adPicsItemObj.picHint[adPicsItemObj.adNumPic];
  document.returnValue = true;
}