function Is(){
	  this.agent=navigator.userAgent.toLowerCase();
	  this.opera=(this.agent.indexOf('opera')!=-1) ? true:false;
	  this.ie4=((this.agent.indexOf('msie')!=-1) && (this.agent.indexOf('opera')==-1)) ? true:false;
	  this.ns6=((this.agent.indexOf('gecko')!=-1) && (this.agent.indexOf('opera')==-1)) ? true:false;
	  this.ns4=((this.agent.indexOf('mozilla')!=-1) && (this.agent.indexOf('opera')==-1) && (this.agent.indexOf('msie')==-1) && (this.agent.indexOf('gecko')==-1)) ? true:false;
	}
var is=new Is();


	function number_format(number, decimals, point, separator)
		{
			number=number.toString();
			if(!isNaN(number))
			{
				point = point ? point : '.';
				number = number.split('.');
				if(separator)
				{
					var tmp_number = new Array();
					for(var i = number[0].length, j = 0; i > 0; i -= 3)
					{
						var pos = i > 0 ? i - 3 : i;
						tmp_number[j++] = number[0].substring(i, pos);
					}
					number[0] = tmp_number.reverse().join(separator);
				}
				if(decimals)
				{
					number[1] = number[1] ? number[1] : '0';
					number[1] = Math.round(parseFloat(number[1].substr(0, decimals) + '.' + number[1].substr(decimals, number[1].length), 10));
					var size = decimals - number[1].toString().length;
					for(var i = 0; i < size; i++) number[1] += '0';
				}
				return(number.join(point));
			}
			else return(null);
		}

function isEmail(str_value)
	{
		var reg_exp=/^[a-z][\w\.-]*@[a-z][\w\.-]+\.[a-z]{2,3}/i;	
		var valid_email=reg_exp.test(str_value);
		return valid_email;
	}

function MyFunction()
{
}