var homeMainContents = new Array('subcontent1','subcontent2','subcontent3','subcontent4', 'subcontent5'); 
var currentHContent = 0;              
var HContentTmr;        
$(document).ready(function (){    
    if(homeMainContents.length>1)
    {          
        HContentTmr = setTimeout("changeHContent(1)", 5000); 
    }

});

function changeHContent(idx)
{             
    $("#" + homeMainContents[currentHContent]).fadeOut("slow");
    $("#" + homeMainContents[idx]).fadeIn("slow"); 
    
    currentHContent = idx;  
    
    var nextidx;
    if(idx+1 ==  homeMainContents.length)
    {
        nextidx = 0;
    }
    else
    {
        nextidx = idx + 1;
    }
    
    HContentTmr = setTimeout("changeHContent(" + nextidx + ")", 5000); 
}