function showdiv(objname)
{
    var myobj = document.getElementById(objname);
    if (myobj)
    {
        var tt_n = navigator.userAgent.toLowerCase();
        var block = document.getElementById("blockUI");

        if (objname == 'video1' || objname == 'video2')
        {
            myobj.style.left = (document.documentElement.scrollLeft+30) + '%';
        }
        else
        {
            myobj.style.left = (document.documentElement.scrollLeft+35) + '%';
        }

        var osheight;
        if (tt_n.indexOf("safari") != -1)
        {
            osheight = 0;
        }
        else
        {
            osheight = myobj.offsetHeight;
        }
        myobj.style.top = document.body.scrollTop - osheight + 50;
        
        if (tt_n.indexOf("msie") != -1)
        {
            block.style.height = document.body.scrollTop + document.body.offsetHeight;
        }
        else
        {
            block.style.height = document.body.offsetHeight;
        }
        block.style.display = 'block';
        
        myobj.style.display = "block";
    }
}
function hidediv(objname)
{
    var myobj = document.getElementById(objname);
    myobj.style.display = 'none';
    var block = document.getElementById("blockUI");
    block.style.display = 'none';
}

function closepopup(id)
{
    var temp = document.getElementById(id);
    temp.style.display = "none";
    var block = document.getElementById("blockUI");
    block.style.display = 'none';
}

	function changecss(theClass,element,value) {
	 var cssRules;
	 if (document.all) {
	  cssRules = 'rules';
	 }
	 else if (document.getElementById) {
	  cssRules = 'cssRules';
	 }
	 for (var S = 0; S < document.styleSheets.length; S++){
	  for (var R = 0; R < document.styleSheets[S][cssRules].length; R++) {
	   if (document.styleSheets[S][cssRules][R].selectorText == theClass) {
	    document.styleSheets[S][cssRules][R].style[element] = value;
	   }
	  }
	 }	
	}