javascript 完美解决对联广告

javascript　完美解决对联广告

 

//
function couplet(){ 
    if(arguments.length>=1) this.objID = document.getElementById(arguments[0]); 
    if(arguments.length>=2) this.divTop = arguments[1]; 
    if(arguments.length>=3) this.divPlane = arguments[2]; 
    if(arguments.length>=4) this.scrollDelay = arguments[4]; 
    if(arguments.length>=5) this.waitTime = arguments[5]; 
if(!this.objID){ 
alert("对象名【"+ arguments[0] +"】无效，对联无法初始化，请检查对象名称是否正确！"); 
this.objID = null; return; 
}else{ 
this.objID.style.position="absolute"; 
this.objID.style.display="block"; 
this.objID.style.zIndex=9999; 
} 
if("" == this.objID.style.top){ 
if(isNaN(this.divTop)){ 
alert("对象垂直位置(top)参数必须为数字。"); return; 
}else{ 
this.objID.style.top = this.divTop+"px"; 
} 
} 
if("" == this.objID.style.left && "" == this.objID.style.right){ 
if(isNaN(this.divPlane)){ 
alert("对象水平位置(left||right)参数必须为数字。"); return; 
} 
if(this.divPlane>0) this.objID.style.left = this.divPlane+"px"; 
if(this.divPlane<0) this.objID.style.right = Math.abs(this.divPlane)+"px"; 
} 
if(this.scrollDelay<15 || isNaN(this.scrollDelay)) this.scrollDelay = 15; 
if(this.waitTime<500 || isNaN(this.waitTime)) this.waitTime = 500; 
if(arguments.length>=1) this.start(); 
} 
couplet.prototype.start = function(){ 
if(null == this.objID) return; 
var objCouplet = this; 
timer = this.scrollDelay; 
objCouplet.lastScrollY = 0; 
objCouplet.timerID = null; 
objCouplet.startID = function(){ 
    if("block" == objCouplet.objID.style.display){ 
        objCouplet.run(); 
        }else{ 
        clearInterval(objCouplet.timerID); 
    } 
    } 
    objCouplet.Begin = function(){ 
    objCouplet.timerID = setInterval(objCouplet.startID,timer); 
} 

    setTimeout(objCouplet.Begin,this.waitTime); 
} 
couplet.prototype.run = function(){ 
    if(document.documentElement && document.documentElement.scrollTop){ 
        uu_scrY = parseFloat(document.documentElement.scrollTop); 
        }else if(document.body){ 
        uu_scrY = parseFloat(document.body.scrollTop); 
    } 
    uu_divX = parseFloat(this.objID.style.top.replace("px","")); 
    uu_curTop = .1 * (uu_scrY - this.lastScrollY); 
    uu_curTop = uu_curTop>0?Math.ceil(uu_curTop):Math.floor(uu_curTop); 
    this.objID.style.top = parseFloat(uu_divX + uu_curTop) + "px"; 
    this.lastScrollY += uu_curTop; 
}
//
function maple_hide(num){
    document.getElementById("maple"+num).style.display="none";

}
// 
function floatjs(){  
            new couplet("maple1",100,1);   
            new couplet("maple2",450,8);
            new couplet("maple3",100,-8);
            //new couplet("maple4",450,-8);  
        }  
    if( window.addEventListener) window.addEventListener('load',floatjs,false);  
else window.attachEvent('onload',floatjs); 
//
document.write('<div id="maple1"><a href="http://www.k686.com/" target="_blank"><img src="http://www.lygnk.com/images/shinian.jpg"  border="0" /></a><div style="position: absolute;width:30px;height:30px;top:0px;right:5px;cursor:pointer" onclick="maple_hide(1)">XX</div></div>');
document.write('<div id="maple2"><a href="http://www.k686.com/" target="_blank"><img src="http://www.lygnk.com/images/shinian.jpg"  border="0" /></a><div style="position: absolute;width:30px;height:30px;top:0px;right:5px;cursor:pointer" onclick="maple_hide(2)">XX</div></div>');
document.write('<div id="maple3"><a href="http://www.k686.com/" target="_blank"><img src="http://www.lygnk.com/images/shinian.jpg"  border="0" /></a><div style="position: absolute;width:30px;height:30px;top:0px;right:5px;cursor:pointer" onclick="maple_hide(3)">XX</div></div>');
//document.write('<div id="maple4"><a href="http://www.k686.com/" target="_blank"><img src="http://www.lygnk.com/images/shinian.jpg"  border="0" /></a></div>');