function checnum(as)
{
	var a = as.value;
}

function ratio()
{
	var x1 = document.first.x1.value;
	var y1 = document.first.y1.value;
	var x2 = document.first.x2.value;
	var y2 = document.first.y2.value;
	var m = document.first.m.value;
	var n = document.first.n.value;
	if(document.first.seg.value="int")
	{ 
		var aa = (m*x2) + (n*x1);
		var bb = parseInt(m) + parseInt(n);
		var cc = (m*y2) + (n*y1);
		if(Math.round(aa/bb) == (aa/bb))
		{
			var xx = aa/bb;
		}
		else{
			var xx = aa + "/" + bb;
		}
		if(Math.round(cc/bb) == (cc/bb))
		{
			var yy = cc/bb;
		}
		else{
			var yy = cc + "/" + bb;
		}
		
		document.first.r1.value = xx + " , " + yy;
	}
	if(document.first.seg.value="ext")
	{
		var aa = (m*x2) - (n*x1);
		var bb = parseInt(m) - parseInt(n);
		var cc = (m*y2) - (n*y1);
		if(Math.round(aa/bb) == (aa/bb))
		{
			var xx = aa/bb;
		}
		else{
			var xx = aa + "/" + bb;
		}
		if(Math.round(cc/bb) == (cc/bb))
		{
			var yy = cc/bb;
		}
		else{
			var yy = cc + "/" + bb;
		}
		
		document.first.r1.value = xx + " , " + yy;
	}
}
	
function color(test)
{

	for(var j=2; j<10; j++)
	{
		var myI=document.getElementsByTagName("input").item(j);
		//myI.setAttribute("style",ch);
		myI.style.backgroundColor=test;
	}
}

function color1(test)
{
var myI=document.getElementsByTagName("table").item(0);
//myI.setAttribute("style",ch);
myI.style.backgroundColor=test;
}