function ss()
{
	return this.replace(/^\s+/,'').replace(/\s+$/,'');
}
String.prototype.trim=ss;

function isvalnumAlpha(data)
{
	var numStr="1234567890-=\~!@#$%^&*()_+|?><:{},";
	var thisChar;
	var counter=0;
	for(var i=0; i < data.length; i++)
		{
			thisChar=data.substring(i,i+1);
			if(numStr.indexOf(thisChar)==-1)
			{counter++;}
		}
		if(counter==data.length)
		{return true;}
		else
		return false;
}
function isNumber(data)
{
	var numStr="1234567890-_,";
	var thisChar;
	var counter=0;
	for(var i=0; i < data.length; i++)
		{
			thisChar=data.substring(i,i+1);
			if(numStr.indexOf(thisChar)!=-1)
			{counter++;}
		}
		if(counter==data.length)
		{return true;}
		else
		return false;
}