$(document).ready(function() {
    var hov=false;		
    var lasthover=null;
    $(".imgheader").hide();
    
    $("div.teamop_topheader").mouseenter(function() {
        if (lasthover == null)
	        lasthover=new Date();   
    
        setTimeout(function(){
            if (lasthover != null) {
		        var diff = new Date(new Date() - lasthover);
		        var ms = (diff.getSeconds() * 1000) + diff.getMilliseconds();					        				
		        if (ms >= 750)
			        doDropHeader();
			 }	
        },750);		
    });
    $("div.teamop_topheader").mouseleave(function() {
        lasthover=null;
    });  
    function doDropHeader() {
        if (hov==false) {				        
	        hov=true;	
	        setTimeout(function(){
		        $('.imgheader').slideDown('fast');
		        setTimeout(function(){
			        $('.imgheader').slideUp('fast');
			        hov=false;						        
		        },3500);
	        },500);
        }
    }
});