var selected = "";

function preload(){

	if (document.images) {
		aviation_over = new Image();
		aviation_over.src = '/images/button_aviation_over.gif';
		aviation_up = new Image();
		aviation_up.src = '/images/button_aviation.gif';
		
		airboat_over = new Image();
		airboat_over.src = '/images/button_airboat_over.gif';
		airboat_up = new Image();
		airboat_up.src = '/images/button_airboat.gif';		
		
		aboutus_over = new Image();
		aboutus_over.src = '/images/button_aboutus_over.gif';
		aboutus_up = new Image();
		aboutus_up.src = '/images/button_aboutus.gif';		
		
		contact_over = new Image();
		contact_over.src = '/images/button_contact_over.gif';
		contact_up = new Image();
		contact_up.src = '/images/button_contact.gif';	
		
		angle1_over = new Image();
		angle1_over.src = '/images/button_angle1_over.gif';
		angle1_up = new Image();
		angle1_up.src = '/images/button_angle1.gif';	

		angle1_splash_over = new Image();
		angle1_splash_over.src = '/images/button_angle1_splash_over.gif';
		angle1_splash_up = new Image();
		angle1_splash_up.src = '/images/button_angle1_splash.gif';	
		
		angle2_over1 = new Image();
		angle2_over1.src = '/images/button_angle2_over1.gif';
		angle2_over2 = new Image();
		angle2_over2.src = '/images/button_angle2_over2.gif';
		angle2_over3 = new Image();
		angle2_over3.src = '/images/button_angle2_over3.gif';
		angle2_up = new Image();
		angle2_up.src = '/images/button_angle2.gif';	

		angle3_over1 = new Image();
		angle3_over1.src = '/images/button_angle3_over1.gif';
		angle3_over2 = new Image();
		angle3_over2.src = '/images/button_angle3_over2.gif';
		angle3_over3 = new Image();
		angle3_over3.src = '/images/button_angle3_over3.gif';
		angle3_up = new Image();
		angle3_up.src = '/images/button_angle3.gif';
		
		angle4_over1 = new Image();
		angle4_over1.src = '/images/button_angle4_over1.gif';
		angle4_over2 = new Image();
		angle4_over2.src = '/images/button_angle4_over2.gif';
		angle4_over3 = new Image();
		angle4_over3.src = '/images/button_angle4_over3.gif';
		angle4_up = new Image();
		angle4_up.src = '/images/button_angle4.gif';

		angle5_over = new Image();
		angle5_over.src = '/images/button_angle5_over.gif';
		angle5_up = new Image();
		angle5_up.src = '/images/button_angle5.gif';				
		
	}
	
}	

function changeImages(obj,state) {
		if (document.layers) eval('document.images["'+obj+'"].src = '+obj+'_'+state+'.src');
		else eval("document.images[obj].src = "+obj+"_"+state+".src");
}

function formSelectCategory(elementName,index){
	eval("document.navigation."+elementName+".selectedIndex = "+index);
}



function lookUp(mode,obj,state){

		switch(mode)
		{
			case "aviation" : if(state == "over"){changeImages('aviation','over');changeImages('angle1','over');changeImages('angle2','over1');}else{ changeImages('aviation','up');changeImages('angle1','up');changeImages('angle2','up');}; break;
			case "aviation1": if(state == "over"){changeImages('airboat','over');changeImages('angle2','over2');changeImages('angle3','over1');}else{ changeImages('airboat','up');changeImages('angle2','over1');changeImages('angle3','up');}; break; // case when aviation is selected and airboat is mouseover/mouseoff
			
			case "airboat" : if(state == "over"){changeImages('airboat','over');changeImages('angle2','over3');changeImages('angle3','over1');}else{ changeImages('airboat','up');changeImages('angle2','up');changeImages('angle3','up');}; break;
			case "airboat1": if(state == "over"){changeImages('aviation','over');changeImages('angle1','over');changeImages('angle2','over2');}else{ changeImages('aviation','up');changeImages('angle1','up');changeImages('angle2','over3');}; break; // case when aviation is selected and airboat is mouseover/mouseoff
			case "airboat2": if(state == "over"){changeImages('aboutus','over');changeImages('angle3','over2');changeImages('angle4','over1');}else{ changeImages('aboutus','up');changeImages('angle3','over1');changeImages('angle4','up');}; break; // case when aviation is selected and airboat is mouseover/mouseoff
			
			case "aboutus" : if(state == "over"){changeImages('aboutus','over');changeImages('angle3','over3');changeImages('angle4','over1');}else{ changeImages('aboutus','up');changeImages('angle3','up');changeImages('angle4','up');}; break;
			case "aboutus1": if(state == "over"){changeImages('airboat','over');changeImages('angle2','over3');changeImages('angle3','over2');}else{ changeImages('airboat','up');changeImages('angle2','up');changeImages('angle3','over3');}; break; // case when airboat is selected and aboutus is mouseover/mouseoff
			case "aboutus2": if(state == "over"){changeImages('contact','over');changeImages('angle4','over2');changeImages('angle5','over');}else{ changeImages('contact','up');changeImages('angle4','over1');changeImages('angle5','up');}; break; // case when airboat is selected and aboutus is mouseover/mouseoff
			
			case "contact" : if(state == "over"){changeImages('contact','over');changeImages('angle4','over3');changeImages('angle5','over');}else{ changeImages('contact','up');changeImages('angle4','up');changeImages('angle5','up');}; break;
			case "contact1": if(state == "over"){changeImages('aboutus','over');changeImages('angle3','over3');changeImages('angle4','over2');}else{ changeImages('aboutus','up');changeImages('angle3','up');changeImages('angle4','over3');}; break; // case when contact is selected and airboat is mouseover/mouseoff
			
		}

}

function selector(obj,state){

	//aviation begin
	if ((selected != "aviation") && (selected != "airboat") && (obj == "aviation")) lookUp(obj,obj,state);//none selected yet, just act normal
	if ((selected == "aviation") && (obj == "aviation"));//do nothing, self selected
	if ((selected == "aviation") && (obj == "airboat")) lookUp('aviation1',obj,state);//case where button to right is rolled over
	//aviation end
	
	//airboat begin
	if ((selected != "aviation") && (selected != "airboat") && (selected != "aboutus") && (obj == "airboat")) lookUp(obj,obj,state);//none selected yet, just act normal
	if ((selected == "airboat") && (obj == "airboat")) ;//do nothing, self selected
	if ((selected == "airboat") && (obj == "aviation")) lookUp('airboat1',obj,state);//case where button to left is rolled over	
	if ((selected == "airboat") && (obj == "aboutus")) lookUp('airboat2',obj,state);//case where button to right is rolled over	
	//airboat end
	
	//aboutus begin
	if ((selected != "airboat") && (selected != "aboutus") && (selected != "contact") && (obj == "aboutus")) lookUp(obj,obj,state);//none selected yet, just act normal
	if ((selected == "aboutus") && (obj == "aboutus")) ;//do nothing, self selected
	if ((selected == "aboutus") && (obj == "airboat")) lookUp('aboutus1',obj,state);//case where button to left is rolled over	
	if ((selected == "aboutus") && (obj == "contact")) lookUp('aboutus2',obj,state);//case where button to right is rolled over	
	//aboutus end
	
	//contact begin
	if ((selected != "contact") && (selected != "aboutus") && (obj == "contact")) lookUp(obj,obj,state);//none selected yet, just act normal
	if ((selected == "contact") && (obj == "contact"));//do nothing, self selected
	if ((selected == "contact") && (obj == "aboutus")) lookUp('contact1',obj,state);//case where button to left is rolled over
	//contact end
	
}