function openDiv(ID)
  {
   
         var width ;
        document.getElementById(ID).style.display = '';
        blanket_size1(ID);
        window_pos1(ID);
        document.getElementById('Back').style.display = '';
       if(ID=='popUpDiv2' || ID=='popUpDiv3')
       {
      
          document.getElementById('popUpDiv1').style.zIndex= 98; // to shadow 2nd popup in timeband section 

         }
 
          
  
 }
 function Close(ID, mode) 
 {
       
           if(ID=='popUpDiv1')
           {
           Close('popUpDiv2','false');
           Close('popUpDiv3','false');
           }
            if(ID=='popUpDiv2' || ID=='popUpDiv3')
            {
            //  changeOpac(100,'popUpDiv1');
             document.getElementById('popUpDiv1').style.zIndex= 99;
            }
            
            document.getElementById(ID).style.display = 'none';
            document.getElementById('progress1').style.display = 'none';
            if (mode == 'true')
            document.getElementById('Back').style.display = 'none';
          
 }
 function blanket_size1(popUpDivVar) 
 {
   
     
     var heights= (document.getElementById(popUpDivVar).offsetHeight)/2;

                    
         if(popUpDivVar=='popUpDiv2')
         {
         Close('popUpDiv3','false');
         }
         if(popUpDivVar=='popUpDiv3')
         {
         Close('popUpDiv2','false');
         }
              
              
        
        if (typeof window.innerWidth != 'undefined') {
            viewportheight = window.innerHeight;
        } else {
            viewportheight = document.documentElement.clientHeight;
        }
        if ((viewportheight > document.body.parentNode.scrollHeight) && (viewportheight > document.body.parentNode.clientHeight)) {
            blanket_height = viewportheight;
        } else {
            if (document.body.parentNode.clientHeight > document.body.parentNode.scrollHeight) {
                blanket_height = document.body.parentNode.clientHeight;
            } else {
                blanket_height = document.body.parentNode.scrollHeight;
            }
        }
        var blanket = document.getElementById('Back');
        blanket.style.height = blanket_height + 'px';
        var popUpDiv = document.getElementById(popUpDivVar);
        popUpDiv_height = blanket_height / 2 - heights; //150 is half popup's height
        popUpDiv.style.top = popUpDiv_height + 'px';
        
        
       
    }
    function window_pos1(popUpDivVar) 
    {
   
     width= (document.getElementById(popUpDivVar).offsetWidth)/2; 
      
        if (typeof window.innerWidth != 'undefined') {
            viewportwidth = window.innerHeight;
        } else {
            viewportwidth = document.documentElement.clientHeight;
        }
        if ((viewportwidth > document.body.parentNode.scrollWidth) && (viewportwidth > document.body.parentNode.clientWidth)) {
            window_width = viewportwidth;
        } else {
            if (document.body.parentNode.clientWidth > document.body.parentNode.scrollWidth) {
                window_width = document.body.parentNode.clientWidth;
            } else {
                window_width = document.body.parentNode.scrollWidth;
            }
        }
        var popUpDiv = document.getElementById(popUpDivVar);
        window_width = window_width / 2 - width; //225 is half popup's width
        popUpDiv.style.left = window_width + 'px';
        
     
        
    }
function opacity(id, opacStart, opacEnd, millisec) {
	//speed for each frame
	var speed = Math.round(millisec / 100);
	var timer = 0;

	//determine the direction for the blending, if start and end are the same nothing happens
	if(opacStart > opacEnd) {
		for(i = opacStart; i >= opacEnd; i--) {
			setTimeout("changeOpac(" + i + ",'" + id + "')",(timer * speed));
			timer++;
		}
	} else if(opacStart < opacEnd) {
		for(i = opacStart; i <= opacEnd; i++)
			{
			setTimeout("changeOpac(" + i + ",'" + id + "')",(timer * speed));
			timer++;
		}
	}
}

//change the opacity for different browsers
function changeOpac(opacity, id) {
	var object = document.getElementById(id).style; 
	object.opacity = (opacity / 100);
	object.MozOpacity = (opacity / 100);
	object.KhtmlOpacity = (opacity / 100);
	object.filter = "alpha(opacity=" + opacity + ")";
}

function shiftOpacity(id, millisec) {
	//if an element is invisible, make it visible, else make it ivisible
	if(document.getElementById(id).style.opacity == 0) {
		opacity(id, 0, 100, millisec);
	} else {
		opacity(id, 100, 0, millisec);
	}
}

function blendimage(divid, imageid, imagefile, millisec) {
	var speed = Math.round(millisec / 100);
	var timer = 0;
	
	//set the current image as background
	document.getElementById(divid).style.backgroundImage = "url(" + document.getElementById(imageid).src + ")";
	
	//make image transparent
	changeOpac(0, imageid);
	
	//make new image
	document.getElementById(imageid).src = imagefile;

	//fade in image
	for(i = 0; i <= 100; i++) {
		setTimeout("changeOpac(" + i + ",'" + imageid + "')",(timer * speed));
		timer++;
	}
}

function currentOpac(id, opacEnd, millisec) {
	//standard opacity is 100
	var currentOpac = 100;
	
	//if the element has an opacity set, get it
	if(document.getElementById(id).style.opacity < 100) {
		currentOpac = document.getElementById(id).style.opacity * 100;
	}

	//call for the function that changes the opacity
	opacity(id, currentOpac, opacEnd, millisec)
}