$(document).ready(function(){
    //	alert("prash");	
    $("#sub_1").hide();
    $("#sub_2").hide();
    $("#sub_3").hide();
    $("#sub_4").hide();
    $("#sub_5").hide();
    $("#sub_6").hide();

    $("#main1").click(function(){
	$("#sub_1").slideToggle("slow");
    }); 
    $("#main2").click(function(){
	$("#sub_2").slideToggle("slow");
    }); 
    $("#main3").click(function(){
	$("#sub_3").slideToggle("slow");
    }); 
    $("#main4").click(function(){
	$("#sub_4").slideToggle("slow");
    }); 
    $("#main5").click(function(){
	$("#sub_5").slideToggle("slow");
    });
     $("#main6").click(function(){
	$("#sub_6").slideToggle("slow");
    });
    
});

function change_img(show_which_sub,mode,img){

    if (show_which_sub != "") {
	if (browser == "netscape") {
	    if (document.getElementById(show_which_sub).style.display == 'block') {	
		document.getElementById(img).innerHTML = "<img src='images/close_arrow1.jpg' alt='Cameron Construction' title='Cameron Construction'>";
	    }
	    else {
		document.getElementById(img).innerHTML = "<img src='images/open_arrow1.jpg' alt='Cameron Construction' title='Cameron Construction'>";
	    }
	}
	else if (browser == "ie") {
	    show_menu = eval(show_which_sub);
	    if(show_menu.style.display == 'block'){
		document.getElementById(img).innerHTML = "<img src='images/close_arrow1.jpg' alt='Cameron Construction' title='Cameron Construction'>";
	    } 
	    else {
		document.getElementById(img).innerHTML = "<img src='images/open_arrow1.jpg' alt='Cameron Construction' title='Cameron Construction'>";
	    }
	}    
    }
}