function SlipLine(k)
{
	this.k=k;
}

function Block(id)
{
	this.id=id;
	this.bK = 0.0;
	
	this.Lines = new Array(arguments.length-1);
	for(i=0;i<arguments.length-1;i++)
	{
		this.Lines[i]=arguments[i+1]; 
	}
	
	this.blockK = function()
	{
		var K=1.0;
		for(i=0;i<this.Lines.length;i++)
		{
			K *= this.Lines[i].k;
		} 
		this.bK=K;
		return K;
	}
	
	this.addLine = function()
	{
		this.Lines.push(arguments[0]);
	}
}