// JavaScript Document

//
// global variables
//
var isMozilla;
var objDiv = null;
var DivID = "";
var over = false;

function surveyInit(){
	
	var s = document.getElementById("layer1");
		
	//s.style.left = (document.width / 2) - 150;
	
    // check browser
    isMozilla = (document.all) ? 0 : 1;


    if (isMozilla) 
    {
        document.captureEvents(Event.MOUSEDOWN | Event.MOUSEMOVE | Event.MOUSEUP);
    }

    document.onmousedown = MouseDown;
    document.onmousemove = MouseMove;
    document.onmouseup = MouseUp;

}

function hideFloatingDiv(divId) 
{

	document.getElementById(divId).style.visibility='hidden';
	
	DivID = "";
	
}

//
//
//
function MouseDown(e) 
{
    if (over)
    {
        if (isMozilla) {
            objDiv = document.getElementById(DivID);
            X = e.layerX;
            Y = e.layerY;
            return false;
        }
        else {
            objDiv = document.getElementById(DivID);
            objDiv = objDiv.style;
            X = event.offsetX;
            Y = event.offsetY;
        }
		
    }
}


//
//
//
function MouseMove(e) 
{
    if (objDiv) {
        if (isMozilla) {
            objDiv.style.top = (e.pageY-Y) + 'px';
            objDiv.style.left = (e.pageX-X) + 'px';
            return false;
        }
        else 
        {
            objDiv.pixelLeft = event.clientX-X + document.body.scrollLeft;
            objDiv.pixelTop = event.clientY-Y + document.body.scrollTop;
            return false;
        }
    }
}

//
//
//
function MouseUp() 
{
    objDiv = null;
}


function slideLayer(){	

	//read cookie
	
	var survey2007Displayed = readCookie('survey2007Displayed');
	var survey2007Taken = readCookie('survey2007Taken');
	
	if ( ! survey2007Displayed && ! survey2007Taken ) {

		DivID = "layer1";
	
		var s = document.getElementById("layer1");
	
		s.style.ypos = parseInt(s.style.top);
		
		if ( s.style.ypos < 200 ) {
		
			s.style.ypos += 5;	
			s.style.top = s.style.ypos + "px";
			
			setTimeout("slideLayer()", 1);
			
		} else {
			
			//set the cookie
			
			//displayed survey
			
			createCookie ('survey2007Displayed', 'true');
			
		}

	}

   return false;   

}