/**
 * @author danielconn
 */
    var x_axis = "plus";
	var y_axis = "plus";
	var x_axis1 = "plus";
	var y_axis1 = "plus";
	var top_border = 100;
	var bottom_border =350;
	var left_border = 10;
	var right_border = 600;
	

 function moveObj() 
{
var obj = document.getElementById("obj").style;
var obj1 = document.getElementById("obj1").style;
	

if (y_axis == "plus")
{
obj.top = parseInt(obj.top) + 1 + "px";

} else {
obj.top = parseInt(obj.top) - 1 + "px";

}

if (parseInt(obj.top) > bottom_border)
{
y_axis = "minus";
} else if (parseInt(obj.top) < top_border) {
y_axis = "plus";
}

if (parseInt(obj.top) > bottom_border)
{
y_axis = "minus";
} else if (parseInt(obj.top) < top_border) {
y_axis = "plus";
}

//2nd one
if (y_axis1 == "plus")
{
obj1.top = parseInt(obj1.top) + 1 + "px";

} else {
obj1.top = parseInt(obj1.top) - 1 + "px";

}

if (parseInt(obj1.top) > bottom_border)
{
y_axis1 = "minus";
} else if (parseInt(obj1.top) < top_border) {
y_axis1 = "plus";
}


if (parseInt(obj1.top) > bottom_border)
{
y_axis1 = "minus";
} else if (parseInt(obj1.top) < top_border) {
y_axis1 = "plus";
}


theTimeOut = setTimeout('moveObj()', 10);
}