Array.prototype.in_array = function(p_val) {
	for(var i = 0, l = this.length; i < l; i++) {
		if(this[i] == p_val) {
			return true;
		}
	}
	return false;
}

Array.prototype.max = function() {
var max = this[0];
var len = this.length;
for (var i = 1; i < len; i++) if (this[i] > max) max = this[i];
return max;
}

Array.prototype.min = function() {
var min = this[0];
var len = this.length;
for (var i = 1; i < len; i++) if (this[i] < min) min = this[i];
return min;
}

Array.prototype.sort = function()
{
	for(i=0;i<this.length;i++)
	{
		for(j=i+1;j<this.length;j++)
		{
			if(Number(this[i]) >Number(this[j]))
			{
				tempValue = this[j];
				this[j] = this[i];
				this[i] = tempValue;
			}
		}
	}
}