// JavaScript Document

	  if (document.images)
	    {
		  menu_home = new Image()
		  menu_home.src = "images/menu/menu-home.gif";
		    
		  menu_home_hover= new Image()
		  menu_home_hover.src = "images/menu/menu-home-h.gif";
		  
		  menu_product = new Image()
		  menu_product.src = "images/menu/menu-product.gif";  
		  
		  menu_product_hover= new Image()
		  menu_product_hover.src = "images/menu/menu-product-h.gif";
 
		  menu_knowledge = new Image()
		  menu_knowledge.src = "images/menu/menu-knowledge.gif";
		  
		  menu_knowledge_hover= new Image()
		  menu_knowledge_hover.src = "images/menu/menu-knowledge-h.gif";
		  
  		  menu_webboard = new Image()
		  menu_webboard.src = "images/menu/menu-webboard.gif";
		  
		  menu_webboard_hover= new Image()
		  menu_webboard_hover.src = "images/menu/menu-webboard-h.gif";
		  
		  menu_contact = new Image()
		  menu_contact.src = "images/menu/menu-contact.gif";
		  
		  menu_contact_hover = new Image()
		  menu_contact_hover.src = "images/menu/menu-contact-h.gif";
		  
		}

      ck=new Array() 
		
	function clickchpic(picid,picname,n)  
		{  
		for(var i=0;i<=5;i++) 
			{
			ck[i]=i	
		  	if(ck[i]==n)  {document[picid].src = eval(picname + ".src") } 
		    	else 	if(ck[i]==0) {document.pic2.src=menu_home.src; ck[i]=null;}
		    	else	if(ck[i]==1) {document.pic1.src=menu_product.src; ck[i]=null;}
		    	else	if(ck[i]==2) {document.pic3.src=menu_knowledge.src; ck[i]=null;}
				else	if(ck[i]==3) {document.pic4.src=menu_webboard.src; ck[i]=null;}
				else	if(ck[i]==4) {document.pic5.src=menu_contact.src; ck[i]=null;}
	
			} 
		}

	
		
	function chpic(picid,picname,n)
		{     
	    	if(ck[n]==null) {document[picid].src = eval(picname + ".src");}
		}


      subck=new Array() 
		
	function clickchpicsub(picid,picname,n)  
		{  
		for(var i=0;i<=3;i++) 
			{
			subck[i]=i	
		  	if(subck[i]==n)  { document[picid].src = eval(picname + ".src") } 
		    	else 	if(ck[i]==0) { document.pic2.src=contactus.src; ck[i]=null; }
		    	else	if(ck[i]==1) { document.pic1.src=aboutus.src; ck[i]=null;}
		    	else	if(ck[i]==2) {document.pic3.src=portfolio.src; ck[i]=null;}
			}
		}
		
	function chpicsub(picid,picname,n)
		{     
	    	if(subck[n]==null) { document[picid].src = eval(picname + ".src"); }
		}