function findPosX(obj)
{
    var curleft = 0;
    if (obj.offsetParent)
    {
	while (obj.offsetParent)
	{
	    curleft += obj.offsetLeft
	    obj = obj.offsetParent;
	}
    }
    else if (obj.x)
	curleft += obj.x;
    return curleft;
}

function findPosY(obj)
{
    var curtop = 0;
    if (obj.offsetParent)
    {
	while (obj.offsetParent)
	{
	    curtop += obj.offsetTop
	    obj = obj.offsetParent;
	}
    }
    else if (obj.y)
	curtop += obj.y;
    return curtop;
}

var x,y;
var srcs = new Array();
var targets = new Array();

function init()
{
    y1 = findPosY(document.getElementById("posit1")) - 7;
    y2 = findPosY(document.getElementById("posit2")) + 12;
	 if(y1>y2) {ey=y1;}
	 if(y2>y1) {ey=y2;}
	 if(y2==y1) {ey=y1;}
	 document.getElementById("foot").style.top = ey + "px";
}