function getLeftStr(lefts,leftn) { 
	var sl=lefts; 
	sl = sl.substring(0,leftn); 
	return sl; 
}

function getRightStr(rights,rightn) { 
	var sr=rights; 
	sr = sr.substring(sr.length-rightn,sr.length); 
	return sr; 
}

function getLastOfArr(arr) {
	return arr[arr.length-1];
}

function getIsRadionChecked(radioName) {
	var temp = document.getElementsByName(radioName);
	for (i=0;i<temp.length;i++) {
		if (temp[i].checked) {
			return true;
		}
	}
	return false;
}


function getRadioValue(radioName) {
	var temp = document.getElementsByName(radioName);
	for (i=0;i<temp.length;i++) {
		if (temp[i].checked) {
			return temp[i].value;
		}
	}
}

function getCheckboxNum(checkboxName) {
	var temp = document.getElementsByName(checkboxName);
	var num=0;
	for (i=0;i<temp.length;i++) {
		if (temp[i].checked) {
			num++;
		}
	}
	return num;
}

function getCheckboxValue(checkboxName) {
	var temp = document.getElementsByName(checkboxName);
	var valueArr = new Array();
	var j=0;
	for (i=0;i<temp.length;i++) {
		if (temp[i].checked) {
			valueArr[j]=temp[i].value;
			j++;
		}
	}
	return valueArr;
}

function isZZS(num) {
	var re=/^[0-9]*[1-9][0-9]*$/
	return re.test(num);
}

/**
 * 去除字符串的空格
 * 首先获得字符串的长度，遍历每个字符，如果当前字符不为空格，tmp变为tmp+当前字符，最后返回tmp
 */
function jsTrim(str) {
	num = str.length;
	tmp = "";
	for(i=1;i<=num;i++) {
		leftStr = getLeftStr(str,1);
		str = getRightStr(str,num-i);
		if(leftStr!=" ") {
			tmp = tmp + leftStr;
		}
	}
	return tmp;
}

function notetxtShow() {
	if( $('notetxt').style.display == "block" ) {
		$('notetxt').style.display = "none";
	} else if( $('notetxt').style.display == "none" ) {
		$('notetxt').style.display = "block";
	} 
}