function showhide_index_menu(){
    aboutus_menu.style.display = "none";
    news_menu.style.display = "none";
    depart_menu.style.display = "none";
    construction_menu.style.display = "none";
	education_menu.style.display = "none";
	research_menu.style.display = "none";
	teacher_menu.style.display = "none";
	admit_menu.style.display = "none";
	contactus_menu.style.display = "none";
}
function showhide_aboutus_menu(){
    aboutus_menu.style.display = "";
    news_menu.style.display = "none";
    depart_menu.style.display = "none";
    construction_menu.style.display = "none";
	education_menu.style.display = "none";
	research_menu.style.display = "none";
	teacher_menu.style.display = "none";
	admit_menu.style.display = "none";
	contactus_menu.style.display = "none";
}
function showhide_news_menu(){
    aboutus_menu.style.display = "none";
    news_menu.style.display = "";
    depart_menu.style.display = "none";
    construction_menu.style.display = "none";
	education_menu.style.display = "none";
	research_menu.style.display = "none";
	teacher_menu.style.display = "none";
	admit_menu.style.display = "none";
	contactus_menu.style.display = "none";
}
function showhide_depart_menu(){
    aboutus_menu.style.display = "none";
    news_menu.style.display = "none";
    depart_menu.style.display = "";
    construction_menu.style.display = "none";
	education_menu.style.display = "none";
	research_menu.style.display = "none";
	teacher_menu.style.display = "none";
	admit_menu.style.display = "none";
	contactus_menu.style.display = "none";
}
function showhide_construction_menu(){
    aboutus_menu.style.display = "none";
    news_menu.style.display = "none";
    depart_menu.style.display = "none";
    construction_menu.style.display = "";
	education_menu.style.display = "none";
	research_menu.style.display = "none";
	teacher_menu.style.display = "none";
	admit_menu.style.display = "none";
	contactus_menu.style.display = "none";
}
function showhide_education_menu(){
    aboutus_menu.style.display = "none";
    news_menu.style.display = "none";
    depart_menu.style.display = "none";
    construction_menu.style.display = "none";
	education_menu.style.display = "";
	research_menu.style.display = "none";
	teacher_menu.style.display = "none";
	admit_menu.style.display = "none";
	contactus_menu.style.display = "none";
}
function showhide_research_menu(){
    aboutus_menu.style.display = "none";
    news_menu.style.display = "none";
    depart_menu.style.display = "none";
    construction_menu.style.display = "none";
	education_menu.style.display = "none";
	research_menu.style.display = "";
	teacher_menu.style.display = "none";
	admit_menu.style.display = "none";
	contactus_menu.style.display = "none";
}
function showhide_teacher_menu(){
    aboutus_menu.style.display = "none";
    news_menu.style.display = "none";
    depart_menu.style.display = "none";
    construction_menu.style.display = "none";
	education_menu.style.display = "none";
	research_menu.style.display = "none";
	teacher_menu.style.display = "";
	admit_menu.style.display = "none";
	contactus_menu.style.display = "none";
}
function showhide_admit_menu(){
    aboutus_menu.style.display = "none";
    news_menu.style.display = "none";
    depart_menu.style.display = "none";
    construction_menu.style.display = "none";
	education_menu.style.display = "none";
	research_menu.style.display = "none";
	teacher_menu.style.display = "none";
	admit_menu.style.display = "";
	contactus_menu.style.display = "none";
}
function showhide_contactus_menu(){
    aboutus_menu.style.display = "none";
    news_menu.style.display = "none";
    depart_menu.style.display = "none";
    construction_menu.style.display = "none";
	education_menu.style.display = "none";
	research_menu.style.display = "none";
	teacher_menu.style.display = "none";
	admit_menu.style.display = "none";
	contactus_menu.style.display = "";
}