function helpRedirector(){
    
    var requestedFileName = GetParam("fileName", self.document.location.search);
    articleFile = '';
    if(requestedFileName) {
        articleFile = requestedFileName;
    } else {
        var requestedArticle = GetParam("article", self.document.location.search);	
        articleFile = getHelpArticleFile(requestedArticle);
    }
    if(articleFile!='') {
        try {
            top.BODY.document.location = articleFile;
        } catch(e) {}
    }
}


function getHelpArticleFile(requestedArticle) {
	if(requestedArticle) {
	    var articleFile = Mapping[requestedArticle.toLowerCase()];
		if (typeof(articleFile)!='undefined') {
			return articleFile;
		} 
	}
	return '';

}

function GetParam(name, params) {
    var i1 = params.indexOf(name+'='); 
    if( i1 == -1 ) return null; 
    i1 += name.length+1; 
    var i2 = params.indexOf('&',i1); 
    if( i2 == -1 ) i2 = params.length;
    return params.substring(i1,i2);
}

onload = helpRedirector;