function trimStr(inputStr) {
	var str = inputStr;					// variable to get the input string
	var i = str.indexOf(" ");
	while (i==0) {						// cut left blanks
		str = str.substring(1);
		i = str.indexOf(" ");
	}
	i = str.lastIndexOf(" ");
	while (i==0) {		// cut right blanks
		str = str.substring(0,str.length-1);
		i = str.lastIndexOf(" ");
	}
	return str;												// return result string
}

function validateCoverImportForm(form)
{
	var msg="";
	form.name.value=trimStr(form.name.value);
	form.author.value=trimStr(form.author.value);
	form.letter.value = trimStr(form.letter.value);
	form.status.value = trimStr(form.status.value);
    if(form.name.value.length==0)
    {
    	msg+="\n没有输入封面名称";
    }
    if(form.author.value.length==0)
    {
    	msg+="\n没有输入漫画作者";
    }
	if(form.coverL.value.length == 0 && form.coverS.value.length == 0){
		msg += "\n没有输入封面logo";
	}
	if(form.level.value == "0"){
		msg += "\n没有输入推荐指数";
	}
	if(form.content.value.length == 0){
		msg += "\n没有输入内容简介";
	}
	if(form.letter.value.length != 1){
		msg += "\n没有输入正确的首字母";
	}else{
		form.letter.value.toLowerCase();
	}
	if(form.status.value.length == 0){
		msg += "\n没有输入连载状态\n";
	}
    if(msg.length>0)
    {
        alert("请输入足够的信息发表话题:\n"+msg);
        return false;
    }
    return true;
}

function validateModCoverForm(form){
	var msg="";
	form.name.value=trimStr(form.name.value);
	form.author.value=trimStr(form.author.value);
	form.letter.value = trimStr(form.letter.value);
	form.status.value = trimStr(form.status.value);
    if(form.name.value.length==0)
    {
    	msg+="\n没有输入封面名称";
    }
    if(form.author.value.length==0)
    {
    	msg+="\n没有输入漫画作者";
    }
	if(form.level.value == "0"){
		msg += "\n没有输入推荐指数";
	}
	if(form.content.value.length == 0){
		msg += "\n没有输入内容简介";
	}
	if(form.letter.value.length != 1){
		msg += "\n没有输入正确的首字母";
	}else{
		form.letter.value.toLowerCase();
	}
	if(form.status.value.length == 0){
		msg += "\n没有输入连载状态\n";
	}
    if(msg.length>0)
    {
        alert("请输入足够的信息发表话题:\n"+msg);
        return false;
    }
    return true;
}

function validateCaptchImportForm(form){
	form.name.value = trimStr(form.name.value);
	form.picDirPath.value = trimStr(form.picDirPath.value);
	form.firstName.value = trimStr(form.firstName.value);
	form.lastName.value = trimStr(form.lastName.value);
	var msg = "";
	if(form.name.value.length == 0){
		msg += "\n没有输入分集名称";
	}
	if(form.letter.value == ""){
		msg += "\n没有选择分类";
	}
	if(form.picDirPath.value.length == 0){
		msg += "\n没有输入图片文件夹路径";
	}
	if(msg.length > 0){
        alert("请输入足够的信息发表话题:\n"+msg);
        return false;
    }
    return true;
}