function addLoadEvent(func)
{
 	var oldonload=window.onload;
	if(typeof window.onload!= 'function')
	{
		window.onload=func	;
	}
	else
	{	
		window.onload= function(){
			oldonload();
			func();
		}	
	}
}

function service()
{
	var vid=document.getElementById("pid");
	var tid1=document.getElementById("tab1");
	var tid2=document.getElementById("tab2");
	var tid3=document.getElementById("tab3");
	var tid4=document.getElementById("tab4");
	vid.onmouseover=function(){
		service_hideshow();
	}
	vid.onmouseout=function(){
		service_hideshow1();
	}
	tid1.onmouseover=function(){
		var x=document.getElementById("subcatg");
		x.style.display ='none';
	}
	tid2.onmouseover=function(){
		var x=document.getElementById("subcatg");
		x.style.display ='none';
	}
	tid3.onmouseover=function(){
		var x=document.getElementById("subcatg");
		x.style.display ='none';
	}
	tid4.onmouseover=function(){
		var x=document.getElementById("subcatg");
		x.style.display ='none';
	}
}

function service_hideshow1()
{
	var x=document.getElementById("subcatg");

	if(x)
	{
		x.onmouseover=function(){	x.style.display ='block';	}
		x.onmouseout= function(){	x.style.display ='none';	}
	}
	else
	{
		x.style.display ='none';
	}
}

function service_hideshow()
{
	var x=document.getElementById("subcatg");
	if(x.style.display =='none')
    {
		x.style.display ='block';
	}
/*    else	
	{
    	x.style.display ='none';
    }
*/}

addLoadEvent(service);