function hyouji(janisbn){
    url='http://www.kanesara.com/book/makebooklink.php?janisbn='+janisbn;
    jsondata=new JSONscriptRequest(url);
    jsondata.buildScriptTag();
    jsondata.addScriptTag();
    document.getElementById('booklist').innerHTML+='<div id="indi"><img src="http://www.raku-yah.com/images/load.gif"></div>'
}

function booklink(data) {
    document.getElementById('booklist').innerHTML='';
    rd=data.value;
    document.getElementById('booklist').innerHTML+=rd;
    jsondata.removeScriptTag();
}

function JSONscriptRequest(fullUrl) {
this.fullUrl=fullUrl; 
this.noCacheIE='&noCacheIE='+(new Date()).getTime();
this.headLoc=document.getElementsByTagName("head").item(0);
this.scriptId='JscriptId'+JSONscriptRequest.scriptCounter++;
};
JSONscriptRequest.scriptCounter=1;
JSONscriptRequest.prototype.buildScriptTag=function () {
this.scriptObj=document.createElement("script");
this.scriptObj.setAttribute("type", "text/javascript");
this.scriptObj.setAttribute("charset", "utf-8");
this.scriptObj.setAttribute("src", this.fullUrl+this.noCacheIE);
this.scriptObj.setAttribute("id", this.scriptId);
};
JSONscriptRequest.prototype.removeScriptTag=function () {
this.headLoc.removeChild(this.scriptObj);  
};
JSONscriptRequest.prototype.addScriptTag=function () {
this.headLoc.appendChild(this.scriptObj);
};