function switch_img(obj) {
	
	if(obj.alt=='explode') {
			explode() ;
		obj.src='images/arrow_up_left.gif';
		obj.alt="collapse";
	} else
	{			collapse() ;
		obj.src='images/arrow_down_right.gif';
		obj.alt="explode";
		}
} 



function collapse() {
	this_menu=document.getElementById("menu_left").getElementsByTagName("div");
	if (this_menu!=null)
		{ 	
		for (d=0; d<this_menu.length; d++)  
		{
		var name=this_menu.item(d).getAttribute('name');
		   	
				if (name == 'sublevel')
				{
				this_menu.item(d).style.display='none'; 
				}
			}
			}
			
	this_menu=document.getElementsByName("cat_img0");		
		if (this_menu!=null)
		{
		for (d=0; d<this_menu.length; d++)
			{this_menu.item(d).src='images/closed.gif';   }
		 }
	
}

function  explode() {
	
	this_menu=document.getElementById("menu_left").getElementsByTagName("div");
	if (this_menu!=null)
		{ 	for (d=0; d<this_menu.length; d++)  
		{	var name=this_menu.item(d).getAttribute('name');
		 	if (name == 'sublevel')	{this_menu.item(d).style.display='';}
			}}
			
		this_menu=document.getElementsByName("cat_img0");		
		if (this_menu!=null)
		{
		for (d=0; d<this_menu.length; d++)
			{this_menu.item(d).src='images/open.gif';   }}
}


function showhide(what,what2,what3)
{
var obj = document.getElementById(what);
var pic = document.getElementById(what2);
var m_img=document.getElementById('sw_img');
if (obj.style.display=='none')
{
obj.style.display='';
pic.src='images/open.gif'
m_img.alt="collapse";
m_img.src='images/arrow_up_left.gif';
}

else
{
obj.style.display='none';
pic.src='images/closed.gif';
this_menu=document.getElementsByName("cat_img0");		
flag=0;
		if(this_menu!=null)
		{ 
		for (d=0; d<this_menu.length; d++)
			{  
			if(this_menu.item(d).src=='http://65.11.59.165/images/open.gif' ) {flag=1}  
			}
		}
	if(flag==0) {		

    m_img.src='images/arrow_down_right.gif';
	m_img.alt="explode";
	}
}


}