preloads=new Array("dyna_energetics","dyna_well","dyna_plat");

	for (i=0;i<preloads.length;i++){
		eval('nav_'+i+'_0 = new Image();');
		eval('nav_'+i+'_0.src = "../../shared/images/'+preloads[i]+'_0.gif";');
		eval('nav_'+i+'_1 = new Image();');
		eval('nav_'+i+'_1.src = "../../shared/images/'+preloads[i]+'_1.gif";');
		eval('nav_'+i+'_2 = new Image();');
		eval('nav_'+i+'_2.src = "../../shared/images/'+preloads[i]+'_2.gif";');
	}

	function swap(img,obj) {
		eval('document.getElementById(img).src = '+obj+'.src;');
	}
	
	//image swap header
	
	old_dia='dia_1';
	
	function dia_swap(new_dia){
	
		document.getElementById(old_dia).style.display = "none";
		document.getElementById(new_dia).style.display = "block";
		old_dia=new_dia;
	}
	//image swap header
	
	old_text='text_1';
	
	function dia_text_swap(new_dia,new_text){
	
		document.getElementById(old_text).style.display = "none";
		document.getElementById(new_text).style.display = "block";
		document.getElementById(old_dia).style.display = "none";
		document.getElementById(new_dia).style.display = "block";
		old_text=new_text;
		old_dia=new_dia;
	}


	
	function newwin(url,x,y) {
		window.open(url,'','width='+x+',height='+y);
	}