function(){
//following code will be here


//0 means disabled; 1 means enabled;

var popupStatus = 0;
//loading popup with jQuery magic!
function loadPopup(){
//loads popup only if it is disabled
if(popupStatus==0){
$("#backgroundPopup").css({
"opacity": "0.7"
});
$("#backgroundPopup").fadeIn("slow");
$("#popupContact").fadeIn("slow");
popupStatus = 1;
}
}
//disabling popup with jQuery magic!
function disablePopup(){
//disables popup only if it is enabled
if(popupStatus==1){
$("#backgroundPopup").fadeOut("slow");
$("#popupContact").fadeOut("slow");
popupStatus = 0;
}
}

function centerPopup(){
var windowWidth = document.documentElement.clientWidth;
var windowHeight = document.documentElement.clientHeight;
var popupHeight = $("#popupContact").height();
var popupWidth = $("#popupContact").width();

$("#popupContact").css({
"position": "absolute",
"top": windowHeight/2-popupHeight/2,
"left": windowWidth/2-popupWidth/2
});

$("#backgroundPopup").css({
"height": windowHeight
});

}
$("#button").click(function(){
centerPopup();
loadPopup();
});

$("#popupContactClose").click(function(){
disablePopup();
});

$("#backgroundPopup").click(function(){
disablePopup();
});

};