/*iType=0 左右都去空格 1 去左 2 去右*/

function cTrim(sInputString,iType)
{
	sInputString=""+sInputString;
	var sTmpStr=' ';
	var i=-1;
	if(iType == 0|| iType == 1)
	{
		while(sTmpStr==' ' || sTmpStr == '\n')
		{
			++i;
			sTmpStr=sInputString.substr(i,1);
		}
		sInputString=sInputString.substring(i);
	}

	if(iType==0 || iType==2)
	{
		sTmpStr=' ';
		i=sInputString.length;
		while(sTmpStr==' ' || sTmpStr == '\n')
		{
			--i;
			sTmpStr=sInputString.substr(i,1);
		}
		sInputString=sInputString.substring(0,i+1);
	}
	return sInputString;
}

function trimLength(sInputString,iType) {
	var str = cTrim(sInputString,iType)
	return str.length;
}

function trimIsNotNull(sInputString,iType) {
	return trimLength(sInputString,iType) > 0;
}

function trimIsNull(sInputString) {
	return trimLength(sInputString,0) <= 0;
}