var slide_start=1;var slide_end=4;var slide_nav=null;var slide_navicons=null;var slides=null;var act_slide=null;slides_init();function slides_init(){this.slides=new Array();this.slide_navicons=new Array();var i;this.slide_nav=antFetchElement('slide_nav');if(this.slide_nav)antSetCss(this.slide_nav,'slide');for(i=this.slide_start;i<=this.slide_end;i++){this.slide_navicons[i]=antFetchElement('slide_navicon_'+i);}for(i=this.slide_start;i<=this.slide_end;i++){this.slides[i]=antFetchElement('slide_'+i);}displaySlide(this.slide_start);}function displaySlide(no){this.act_slide=no;if(!this.slides)return;for(var i=this.slide_start;i<=this.slide_end;i++){(i==no?showSlide(i):hideSlide(i));}}function displayPrev(){displaySlide(this.act_slide<=this.slide_start?this.slide_start:this.act_slide-1);}function displayNext(){displaySlide(this.act_slide>=this.slide_end?this.slide_end:this.act_slide+1);}function showSlide(no){if(!this.slides[no])return;antSetCss(this.slides[no],'slide');if(!this.slide_navicons[no])return;var img_name='img/'+no+'_on.gif';if(this.slide_navicons[no].src.lastIndexOf(img_name)==-1)this.slide_navicons[no].src=img_name;}function hideSlide(no){if(!this.slides[no])return;antSetCss(this.slides[no],'slide_hidden');if(!this.slide_navicons[no])return;var img_name='img/'+no+'_off.gif';if(this.slide_navicons[no].src.lastIndexOf(img_name)==-1)this.slide_navicons[no].src=img_name;}