function getIndex(arr, obj) {
  for(var i=0; i<arr.length; i++) {
    if (arr[i] == obj) return i;
  }
}



function mainPageFlip(sDivId){


	var navDivs = new Array ("digi_company", "digi_technology", "digi_jobs", "digi_contact");
	
	var menuDivs = new Array ("content_menu_company", "content_menu_technology", "content_menu_jobs", "content_menu_contact");
	
	var contentDivs = new Array ("content_textarea_company", "content_textarea_technology", "content_textarea_jobs", "content_textarea_contact");

	
	for (i=0; i<menuDivs.length; i++){
		document.getElementById(menuDivs[i]).style.display = 'none';
		document.getElementById(contentDivs[i]).style.display = 'none';
	}
	
	var j = getIndex(navDivs, sDivId);
	
	document.getElementById(menuDivs[j]).style.display = 'inline';
	document.getElementById(contentDivs[j]).style.display = 'inline';			
	
}